Question

The function for the cost of materials to make a shirt is f(x) = five sixths x + 5, where x is the number of shirts. The function for the selling price of those shirts is g(f(x)), where g(x) = 5x + 6. Find the selling price of 18 shirts

help??!!!!!

Answer 1

what is f(18)

Answer 2

i'm lost?

Answer 3

plug x = 18 into the function f(x)

Answer 4

tell me what you get

Answer 5

96?

Answer 6

f(x) = (5/6)*x + 5

f(18) = (5/6)*18 + 5

f(18) = ??

Answer 7

20

Answer 8

good

Answer 9

now plug that into g(x)

Answer 10

plug 20 into g(x)??

Answer 11

yes

Answer 12

106, got it,. thank you!

Answer 13

yw