The expression represents the cost of n gallons of gas given the cost per gallon is $2.15n.
What is the cost of n gallons?
Multiplication is the mathematical process used to determine the product of a number.
Cost of n gallons = cost per gallons x number of gallons
$2.15 x n
$2,15n
To learn more about multiplication, please check: https://brainly.com/question/13814687
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