Answer:
Explanation:
You set a proportion between distance and gallons. They give you the rate which is 4 gallons for every 28 miles. basically 4/28. To fill out the empty boxes set a proportional ratio.
4/28 X x/7 (cross multiply) meaning you'd multiply 4 and 7 then divide the 28, which would be your number of gallons used and 7 miles traveled. Keep your units tracked.