Use the following functions for 10–12:
f(x) = -2.5x + 12; g(x) = 21x - 28
10. Find h(x) = f(x) + g(x).
11. Find h(x) = g(x) – f(x).
12. Find h(x) = 4g(x).

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)