Joe bought g gallons of gasoline for ​$ 4.95 per gallon and c cans of oil for ​$ 5.45 per can. a. What expression can be used to determine the total amount Joe spent on gasoline and​ oil?
b. If he bought 9.6 gallons of gasoline and 8 cans of​ oil, how much did he spend in​ all?

a. y(cost) = 4.95g + 5.45c

b. $91.12

Step-by-step explanation:

a. Joe bought g gallons of gasoline for 4.95, this can be represented as 4.95g. He bought c cans of oil for 5.45, this can be represented as 5.45c. Add them together to find the total cost, and it will look like this: y(cost) = 4.95g + 5.45c.

b. g = 9.6 gallons

c = 8 cans of oil

Plug these into the equation we did in part A

y(cost) = 4.95(9.6) + 5.45(8)

Solve

y(cost) = 47.52 + 43.6

y(cost) = 91.12

Therefore, if Joe bought 9.6 gallons of gasoline and 8 cans of oil, all in all he spent $91.12.

Hope this helps!!

- Kay :)

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value