Nathan draws the 2 rectangles shown below in the sand. the perimeter of rectangle a is 20 inches greater than the perimeter of rectangle b. the width of rectangle b is 12 inches. what is the length of rectangle b?
(part b):
how much greater is the area of rectangle a than the rectangle b? show or explain how you got your answer.

Which shows the image of rectangle abcd after the rotation (x, y) → (–y, x)?

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

Tomas is making trail mix using granola and walnuts. he can spend a total of $12 on the ingredients. he buys 3 pounds of granola that costs $2.00 per pound. the walnuts cost $6 per pound. he uses the equation to represent the total cost, where x represents the number of pounds of granola and y represents the number of pounds of walnuts. he solves the equation for y, the number of pounds of walnuts he can buy. answer- b tomas added 6 to both sides of the equation instead of subtracting 6. just took the test