Question #f750c

1 Answer
Dec 12, 2017

20x+30

Explanation:

Since the number of t-shirts is the same as the number of sweatshirts, they use the variable x to represent the number of t-shirts and number of sweatshirts, respectively.

To find the TOTAL COST of manufacturing the SAME NUMBER of t-shirts and sweatshirts, we can add the two cost functions together.

T(x)+S(x)=(5x+12)+(15x+18)

Simplify.
T(x)+S(x)=20x+30