What is the correct solution to the equation?

5(x – 5) = 15

a.
–50

b.
–2

c.
8

d.
80

I'm confused on this could anyone me and show me what i need to do to solve it.

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?

If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs