7. Three sisters spent different amounts of money on their recent shopping spree. Ella spent $50 less than Ariel. Belle spent twice as much as Ella. How much did each sister
spend if they spent a total of $370?
A.) Define a variable.
B.) Write an algebraic expression for each of the given quantities.
Ariel:
Ella:
I Belle:
C.) Write and solve an equation.

Asphere has a diameter of 10 in. what is the volume of the sphere?

Darian wants to build a regulation size pool table that is 9 feet in length. he plans he ordered are 18 by 36 inches. what is the scale factor of the dilation he must use to build a regulation pool table

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?