Can so one help me I an stuck on this question from my online class. thank you. i really appreciated.

The function c(x) = 3x − 4 determines how many cupcakes need to be purchased for a birthday party, where x is the number of kids at the party. The party planner uses d(c(x)) to find the amount of money to bring for the cupcake purchase. The function d(x) = 2x + 5. Solve for how much money to bring when there are 7 kids at the party.
17
19
25
39

Question

Can so one help me I an stuck on this question from my online class. thank you. i really appreciated.

The function c(x) = 3x − 4 determines how many cupcakes need to be purchased for a birthday party, where x is the number of kids at the party. The party planner uses d(c(x)) to find the amount of money to bring for the cupcake purchase. The function d(x) = 2x + 5. Solve for how much money to bring when there are 7 kids at the party.
 17
 19
 25
 39

anonymous · Answer

I think is A but i want to make sure.

anonymous · Answer

3(7)-4 = 17
2(17)+5 = 39 so 39