Chap 7 Word Problems.pdf

Chap 7 Word ProblemsName ______________________________Per___1. ACME makes tables in various sizes. The diagram below shows the dimensions of an ACME table.x stands for the size of the table.a. Write a polynomial for the area of a size x table.2x + 4x + 3b. Use the polynomial you found in part a to find the area of a size 3 table.c. For really tiny apartments Acme makes tables with negative sizes. Find the area of a size -1 table.2. Wally placed an order for a wall from the Walla Walla Wall Works. He wasn’t sure exactly how big tomake his wall so he just called the height of the wall x. The picture below shows the wall he ordered.3xx − 2xx − 44x + 5Write an expression for the area of the entire wall ____________Write an expression for the area of the doorway _______________Write an expression for the area of the window _______________Write an expression for the area of wallpaper you would need to cover the wall (but not the door or window)If Wally decides to make his wall 8 feet tall. How many square feet of wallpaper would he need to cover it?

3. Write an expression for the perimeter of each figure.22x+ 3xx − 42x + 123x + 4x +17x2+ 2x25x + 325x + 3x + 44. The amount of krill needed to feed a North Atlantic racing penguin is calculated using the expression3 2b − 4b + 5b+ 9 where b = the length of the penguins beak. How many krill would you need to feed apenguin with a 7 cm long beak?