I am stuck on D and E and could someone tell me if I am on the right track with A-C?

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:
a)What does the number 3.03 represent?
b)Find C(2)3.03*2=6.06
c)Find C(9)3.03*9=27.27
d)For the average motorist, name one value for g that would be inappropriate for this function’s purpose. Explain why you chose the number you did.
e)If you were to graph C(g), what would be an appropriate domain? Range? Explain your reasoning.

a is cost per gallon = 3.03

d no negative gallons :)
e domain is values of g, g ≥ 0 in other words no negative gallons
range is values of C, also no negative values

a) In the given equation, the number 3.03 represents the cost per gallon of gas. This means that for every gallon of gas you purchase, it will cost $3.03.

b) To find C(2), you need to substitute g = 2 into the given equation: C(2) = 3.03 * 2 = 6.06. So, the cost of filling up the gas tank with 2 gallons of gas would be $6.06.

c) Similarly, to find C(9), you need to substitute g = 9 into the given equation: C(9) = 3.03 * 9 = 27.27. So, the cost of filling up the gas tank with 9 gallons of gas would be $27.27.

d) For the average motorist, a value for g that would be inappropriate for this function's purpose could be a negative value or zero. This is because the function assumes that you are purchasing a positive amount of gas, and the cost is based on the number of gallons. It doesn't make sense to fill up the gas tank with a negative amount or no gas at all.

e) If you were to graph C(g), the appropriate domain would be all positive real numbers or zero (if filling up the tank with no gas is allowed). This is because g represents the number of gallons of gas, which cannot be negative or imaginary. The range of the function C(g) would be all positive real numbers or zero, representing the cost of filling the gas tank. It cannot be negative because the cost of filling the gas tank cannot be negative.