solve using elimination method4x + 5y=-8(1)7x+9y=11(2)solution multiply (1) by 7  28x+35y                            (2) by -4  -28 -36=11now addthe equations 28x +35y=56-28-36y =11-y=-45y=45now subsitute 45 intoequation (1)4x+5(45)=-84x=225=-84x=217solution  (217/4,45)

Since this course is the second half of the Algebra material covered in MAT221, a brief review of its last topic is also included in the introductory post. Factoring is the key to everything we do in Week One of MAT222, so it is important that your factoring skills are sharp and ready to go! Please see attachment for the two problems which are circled in red.  Factoring - Week 1.pdf Factor the polynomials using whatever strategy seems appropriate. Referring back to the processes covered in Chapter Five of Elementary and Intermediate Algebra, state which factoring methods you will use and then demonstrate the methods on your problems, explaining the process as you go. Discuss any challenges those particular polynomials posed for the factoring.

Solving ProportionsAssignment problems.pdf   Problems on this attachmentRead the following instructions to complete this assignment: Solve problem 56 on page 437 of Elementary and Intermediate Algebra. Set up the two ratios and write your equation, choosing an appropriate variable for the bear population. Complete problem 10 on page 444 of Elementary and Intermediate Algebra. Write a two- to three-page paper (not including the title page) that is formatted in APA style and according to the Math Writing Guide. Format your math work as shown in the example, and be concise in your reasoning. In the body of your essay, do the followingSet up the proportion for problem 56 on page 437. Demonstrate your solutions to problem 56 on page 437 and to problem 10 on page 444, making sure to include all mathematical work and an explanation for each step. Identify the form of equation you end up with in problem 10, and explain the relationship between the final coefficient of x compared to the original problem. Incorporate the following four math vocabulary words into your paper. Use bold font to emphasize the words in your writing. (Do not write definitions for the words; use them appropriately in sentences describing your math work.) Extraneous Proportion Cross multiply Extreme-means  MAT222.W1.AssignmentExample.pdf