Darnell's car used 8 gallons of gasoline to travel 340 miles. after a mechanic worked on the car , it used 7 gallons of gasoline to travel 350 miles. if the price of gasoline was approximately $4.00 per gallon , how much less to the nearest cent per mile , did it cost to run the car after the mechanic worked on it ?

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles

a) 7x=7

step-by-step explanation: