Mr. harper's car used 5 gallons of gasoline to travel 150 miles. after he had some work done on the cars engine ,it used it used 6 gallons of gasoline to travel 210 miles. if the price of gasoline was $3.50 per gallon, how much money did mr. harper save per mile after the work was done on the cars engine? (round your answers to the nearest cent.)

3.5$

Step-by-step explanation:r. First we have to let the car travel the same distance before and after the modification.Suppose 210 miles

Before:150/5=30mile/gallon   so we need 210/30=7gallons

After:210/6=35mile/gallon   so we need  210/35=6gallons

The difference is 1 gallon.1 multipy by  3.5$/gallon=3.5$

So 3.5$ is Mr.saved.

( I am not sure  if teh answer is correct.)

a

step-by-step explanation:

i get you, what you should do is think of the positive things that would come out of it. it will make yours parents proud and raise your grade. you should always try and if you can't focus tell the teacher.