Question

Suppose you are at the gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas tank with g gallons. Given the equation:
C(g) = 2.75(g)

a. Find C(10)

Answer 1

27.5

Answer 2

C(10) = 2.75(10) = 27.5

Answer 3

I thought it was that simple, but I was wondering if I was wrong, thanks!

Answer 4

Should be that simple.

Answer 5

Will the domain for this function be all real numbers?

Answer 6

all reals yes.

Answer 7

why yes, because cost can't be a negative number?

Answer 8

well, the function itself contains all reals, but in the context of the problem, you could say that it does not contain negative numbers because that would mean you were selling gas.

Answer 9

ok, thanks!