Question Description
Question 1
A system of equations:
Has two or more equations with the same set of unknowns  
Has one equation and two unknowns  
Has two equations with different sets of unknowns  
Has more sets of unknowns than equations 
Question 2
A system of two linear equations and two unknowns can be solved by:
Elimination  
Substitution  
Graphing the equations  
All of the above 
Question 3
A system of two linear equations and three unknowns can be solved by:
Elimination  
Substitution  
Graphing the equations  
It cannot be solved 
Question 4
A system of equations has as many equations as there are variables (unknowns).
True
False
Question 5
Solve these two equations by elimination, substitution or graphing
Equation 1: x+y=1
Equation 2: 2x+4y=6
X=1/3, y = 4/3  
X= 4/3, y = 1/3  
X=1/3, y=4/3  
X=4/3, y=1/3 
Question 6
For the following System of Equations, the Matrix Form included below is correct.
2x+y+z=4
6y+5z=33x
5yz=27
Matrix Form:
True
False
Question 7
The cost C (in millions of dollars) of removing p% of the industrial and municipal pollutants discharged into a river is given by
According to this model, explain why or why not it is possible to remove 100% of the pollutants? SHOW YOUR WORK

Question 8
Question 10
Evaluate the function ƒ(x) = 5x + 4 at ƒ(0)
9  
1  
4  
0 
Question 11
The profit P (in hundreds of dollars) that a company makes depends on the amount x (in hundreds of dollars) the company spends on advertising according to the model. P(x) = 230 + 40x  0.5x^{2} What expenditure for advertising will yield a maximum profit?
40  
0.5  
230  
20 
Question 12
Question 13
Question 14
Find the domain of the function:
All real numbers  
All real numbers except x=3  
All positive real numbers  
All real numbers except x=0 
Question 15
Question 16
Question 17
Question 18
Find the domain of the function
Domain: all real numbers x except x=7  
 
Domain: all real numbers x  
Domain: all real numbers x except x = 6

Question 19
Question 20
Question 21
A system of equations that is represented graphically by two PARALLEL lines has _____ solutions
0  
1  
2  
Infinite 
Question 22
Question 23
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Final Answer
Hi, kindly see the solution. I have a clarification though with number 12. Is that really all of the question? Can you please check?
Question 1
A system of equations:
Has two or more equations with the same set of unknowns
Has one equation and two unknowns
Has two equations with different sets of unknowns
Has more sets of unknowns than equations
Question 2
A system of two linear equations and two unknowns can be solved by:
Elimination
Substitution
Graphing the equations
All of the above
Question 3
A system of two linear equations and three unknowns can be solved by:
Elimination
Substitution
Graphing the equations
It cannot be solved
Question 4
A system of equations has as many equations as there are variables (unknowns).
True
False
Question 5
Solve these two equations by elimination, substitution or graphing
Equation 1: x+y=1
Equation 2: 2x+4y=6
X=1/3, y = 4/3
X= 4/3, y = 1/3
X=1/3, y=4/3
X=4/3, y=1/3
Question 6
For the following System of Equations, the Matrix Form included below is correct.
2x+y+z=4
6y+5z=33x
5yz=27
Matrix Form:
True
False
Question 7
The cost C (in millions of dollars) of removing p% of the industrial and municipal pollutants
discharged into a river is given by
According to this model, explain why or why not it is possible to remove 100% of the
pollutants? SHOW YOUR WORK
At 100%, p would be equal to 100 and the fraction will be equal to 245(100)/(100 – 100) = 24500/0. In
mathematics, any number divided by zero is undefined.
Question 8
The admission fee at the county fair is $2 for children and $4 for adults. On a certain
day, 2000 people enter the fair and $5000 is collected. Using c as the variable to represent the
number of children and a as the variable for adults, write a system of equations to determine how
many children and how many adults attended. Note down this system of equations so that you
can use it for the next question. SHOW YOUR WORK
c + a = 2000

equation 1
2c + 4a = 5000

equation 2
Question 9
Based on the system of equations you wrote in the previous problem, how many children
att...
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