Algebra 2 Expressions Equations and Inequalities

Anonymous
timer Asked: Feb 23rd, 2019
account_balance_wallet $15

Question Description

Please complete the following questions to this Algebra 2 assingment. Please make sure you show your work on each problem. Thank you in advance.

Expressions Equations and Inequalities 1. Bailey withdrew $135 from her checking account. Write an algebraic expression that describes Bailey’s action. Part I: If x represents the variable in the word problem above, explain what the variable should represent. (1 point) x = _____________________________________ Part II: Write an algebraic expression to model the situation. (2 points) Part III: Bailey works part-time at a movie theater. The theater pays employees an hourly wage based on their length of employment. Write an algebraic expression that describes how much Bailey’s employer pays part-time workers. (3 points) Length of employment (months) Hourly wage (dollars/hour) 6 7.55 12 7.85 18 8.15 24 8.45 2. Solve the equation with parentheses and variables on both sides of the equal sign. Part I: Use the distributive property to remove the parentheses. (1 point) Part II: Collect any like terms on both sides of the equation. (1 point) Part III: Bring all variable terms to one side of the equation. (Hint: Add x to both sides.) (1 point) Part IV: Bring all the constant terms to one side. A constant term is a number without a variable. (Hint: Subtract 1 from both sides.) (1 point) Part V: Now solve the one-step equation. Show your work. (1 point) 3. Ben has a part-time job at the Fun Station. Suppose he worked 13.5 hours last week and made $81. How much does Ben earn per hour? Step 1: Write an equation you can use to solve the problem. Be sure to define the variable. (3 points) Step 2: Solve the equation you wrote in step 1. (1 point with work shown) Step 3: Explain the meaning of the solution found in step 2. (1 point) 4. A semi-trailer truck stops at a weigh station before crossing over a bridge. The weight limit on the bridge is 75,500 pounds. The cab (front) of the truck weighs 22,150 pounds, and the trailer (back) of the truck weighs 11,300 pounds when empty. In pounds, how much cargo can the truck carry and still be allowed to cross the bridge? Part I: Write an equation or inequality that models this situation. Let c be the cargo weight. Show your work. (2 points) Part II: Solve the equation or inequality you wrote in Part I for c. What does this tell you about how much cargo the truck can carry and still be allowed to cross the bridge? (4 points) 5. Part I: Solve 7x − 6 > 8 and 3x + 4 ≥ 22 for x. (2 points) Part II: Graph the solution from Part I on the number line provided. Describe the solution in words. (2 points) 6. Solve and graph the compound inequality: 5c + 3 < 28 or –4c – 2 ≤ 14 Part I: Solve 5c + 3 < 28 or –4c – 2 ≤ 14 for c. (2 points) Part II: Graph the solution from Part I on the number line provided. Describe the solution in words. (2 points) 7. Mr. Nelson is checking some of the school’s sport balls to make sure they are in good shape and properly inflated. Use the table of recommended air pressures to define the ranges for properly inflated balls. Ball Average recommended psi (pounds per square inch) Tolerance Soccer ball 12.05 ±3.55 Basketball 8.00 ±0.5 Volleyball 4.44 ±0.18 Part I: Write an absolute value inequality for the recommended air pressure range for each type of ball. Use the variable x for the ball’s actual air pressure. (3 points) Soccer ball: Basketball: Volleyball: Part II: Choose one type of ball and write an absolute value inequality describing the air pressure of balls outside the recommended range. (1 point) Part III: What is the appropriate range for air pressure for the type of ball you selected in Part II? Hint: Look back at your answers to Part 1 to choose the absolute value inequality to solve. (3 points) 8. Thad and his four family members are going to the fair. Admission to the fair costs $8. Books of ride tickets are $15. Thad has $200. How much money will he have for food and souvenirs? Part I: Define your variables and write an inequality that models the situation. (4 points) Part II: After paying for all family members to get into the fair, Thad buys books of ride tickets for 3 of them. Use the inequality from Part I to solve for the amount of money Thad has left for food and souvenirs. Show your work. (3 points) 9. A metronome uses an inverted pendulum rod to control tempo. A weight can be slid up the pendulum rod to decrease tempo, or down the pendulum rod to increase tempo. A second fixed weight is hidden inside the metronome at the base of the pendulum. The longer the distance between the two weights, the slower the tempo. This equation is used to calculate the frequency of the metronome pendulum: f = frequency (number of back and forth cycles in 1 second) measured in hertz g = the acceleration due to gravity; 9.8 m/s2 L = length of the rod — in this case, the length of the rod between the two weights — measured in meters Part I: Each time the metronome’s pendulum completes one back and forth cycle, it produces two ticks or beats. To calibrate the metronome for beats per minute (bpm), the manufacturer needs to know the length of the pendulum for various tempos. Solve for L. (3 points) Part II: If f = 1.6 then there are 2 beats a second, or 192 beats per minute (bpm). What is the length of the rod between the two weights at that tempo? Use your equation from Part I to solve for L. (3 points)

Tutor Answer

seniorlecturerken
School: New York University

Hey there. Have a look at the work done. Let me know if there is any question that needs to be clarified further.

Expressions Equations and Inequalities
1. Bailey withdrew $135 from her checking account. Write an algebraic expression that describes
Bailey’s action.

Part I: If x represents the variable in the word problem above, explain what the variable should
represent. (1 point)
The variable x will represent the money drawn. The value will be;
x = $135

Part II: Write an algebraic expression to model the situation. (2 points)
Let's say that the amount of money in Bailey's checking account is c dollars.
We also know that she took away $135.
From this variable and number, we can state the algebraic expression as c−135.

Part III: Bailey works part-time at a movie theater. The theater pays employees an hourly wage
based on their length of employment. Write an algebraic expression that describes how much
Bailey’s employer pays part-time workers. (3 points)

Length of employment (months)

Hourly wage (dollars/hour)

6

7.55

12

7.85
...

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Review

Anonymous
Excellent job

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