SOLUTION: Suppose a gas tank for a car holds 12 gallons, and that the car uses 1/20 of a gallon per mile. Let X be the number of miles the car has gone since the tank was last filled. A)

Question 490150: Suppose a gas tank for a car holds 12 gallons, and that the car uses 1/20 of a gallon per mile. Let X be the number of miles the car has gone since the tank was last filled.
A) Write an expression for the number of gallons left after "X" miles
B) How many gallons are left after 100 miles
C) Write an equation stating that 5 gallons are left , then solve it to find out how far the car has gone when 5 gallons remain.
D) How far has the car gone when it runs out of gas?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
(a)

(b)

(c)

The car has gone 140 mi
(d)

The car has gone 240 mi
RELATED QUESTIONS
Solve the word problem using linear inequalities. A car that averages 25 miles per... (answered by josgarithmetic,MathTherapy)

Alexander's car has a 16-gallon gas tank. Before filling his tank with gas, the gas gauge (answered by Theo)

A car traveling at 50 miles per hour uses 2 gallons of fuel. The fuel tank has a... (answered by stanbon)

Mr.Thoma's car can travel 17.6 miles per gallon of gas. If his gas tank holds 11 gallons, (answered by richwmiller)

A car gets 32 miles per gallon. The gas tank holds 16 gallons of gas. Write and graph an... (answered by stanbon)

The gas tank on your car holds 21 gallons. If you get between 16 and 18 miles per... (answered by josmiceli,Theo)

You buy a new car with a fuel efficiency of 31 miles per gallon on the highway and 26... (answered by JulietG)

Jim's car gets 26 miles per gallon on the highway and 18 miles per gallon in city... (answered by josgarithmetic)

When full, the gas tank of a car holds 15 gallons. It now contains 12 gallons. What... (answered by solver91311)