Answer:
question 1 = -4,-2
question 2= you already did it
question 3= do 56+672
question 4= 24 gallons
question 5=28 miles per gallon.
Explanation:
to answer this we simply have to divide the miles driven by Chad (308 miles ) by the number of gallons used (11 gallons). Chad's car gets 28 miles per gallon.
hope this helped :b