Derek has $20 to spend on used books. Hardcover books cost $5 each and paperbacks cost $2 each.

Part A
Complete the equation which determines the number x of hardcover books and the number y of paperback books he can buy.

x + y =

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

2pointswhich of the following appear in the diagram below? check all that apply. d a. zcdeов. сеo c. aéo d. zdce

Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size. it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?