Answer:
Total cost of John Stone of renting a car per month = $300
Explanation:
Fixed rate of renting a car = $49
Total fixed rate of renting for 4 weeks = 4 × 49
 = $196
Amount paid for optional insurance per week = $14
Total amount paid for optional insurance in 4 weeks = 4 × 14 
 = $56
Amount spent on gas each week = $12
Total amount spent on gas in 4 weeks = 4 × 12
 = $48
Therefore, Total cost per month = 196 + 56 + 48
 = $300
Hence, Total cost of John Stone of renting a car per month = $300