Function C gives the cost, in dollars, of buying n apples. What does each expression or equation represent in this situation?
1. C(5) = 4.50
2. C(2)

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

Can someone pls ! pls answer all. no explanation needed..

Acoin bank containing only dimes and quarters has 12 more dimes than quarters. the total value of the coins is $11. how many quarters and dimes are in the coin bank?