Question

The function for the cost of materials to make a shirt is f(x)=56x+5 where xis the number of shirts. The function for the selling price of those shirts is g(f (x)), where g(x)=5x+6. How do you find the selling price of 18 shirts?

Answer 1

Answer:

the answer is  g ( f ( 18 ) ) = 106

Step-by-step explanation:

If  f ( x ) =5/ 6 x + 5

and  g ( x ) = 5 x + 6

Then  g( f ( x ) ) = g( 5/6x + 5 ) = 5 ( 5/ 6 x + 5 ) + 6

simplifying

g ( f ( x ) ) = 25 /6 x + 25 +6 = 25 /6 x + 31

If  x = 18

Then  g ( f ( 18) ) = 25/6.18+31=25.3+31=75+31=106