SOLUTION: Christy goes on a road trip; her car gets 26 miles per gallon (mpg) and gas costs $3.12 per gallon. Let n represent the number of miles Christy has traveled since she started d

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Question 1151282: Christy goes on a road trip; her car gets 26 miles per gallon (mpg) and gas costs $3.12 per gallon. Let
n
represent the number of miles Christy has traveled since she started driving.
Suppose Christy has traveled 175 miles (
n
=
175
) since she started driving.
How many gallons of gasoline has Christy used since she started driving?


What is the cost of the gasoline that Christy has used since she started driving?


Write an expression in terms of
n
that represents the number of gallons of gasoline Christy has used since she started driving.


Answer by josgarithmetic(39615) About Me  (Show Source):
You can put this solution on YOUR website!
Fuel efficiency, 26 miles per gallon
Gasoline price, $3.12 per gallon
175 miles since she started her drive

Gallons used: 175%2Amiles%2A%281%2F26%29%28gallon%2Fmiles%29=6.73%2Agallons
(Maybe better to say 6.7 gallons)

Dollars Cost of this gasoline: %28175%2F26%29%2Agallons%2A3.12%2A%28dollars%2Fgallon%29=21%2Adollars