A gas station charges $1.55 per gallon for regular gasoline. Write an expression for the cost c(g) as a function of the number of gallons g and use this function to determine c(12). Match your results to the correct answer below.

Question

Quizplus · Accepted Answer

The correct expression for the cost c(g) is c(g) = 1.55g, since the cost is simply the price per gallon multiplied by the number of gallons. To find c(12), we substitute g = 12 into the expression, giving c(12) = 1.55(12) = $18.60. Therefore, the correct answer is D.

A Gas Station Charges $1