Question

The function c(g)=2g+15c(g)=2g+15 can be used to represent the total cost, cc, for gg gallons of gas. Evaluate the cost of gas for 8 gallons. Round to the nearest dollar.

Answer 1

To evaluate the cost of gas for 8 gallons using the function c(g) = 2g + 15, you can plug 8 in for g in the function and solve for c:

c(8) = 2(8) + 15

= 16 + 15

= 31

Therefore, the cost of gas for 8 gallons is $31. Rounded to the nearest dollar, this is $31.