The figure below shows the fuel consumption (in miles per gallon, mpg) of a car traveling...

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The figure below shows the fuel consumption (in miles per gallon, mpg) of a car traveling at various speeds (in mph). fuel consumption (mpg) 40 30 20 10 speed (mph) 10 20 30 40 50 60 70 80 90 100 (a) How much gas is used on a 300-mile trip at 80 mph? Round your answer to two decimal places. 12 gallons (b) How much gas is saved by traveling 70 mph instead of 80 mph on a 200-mile trip? Round your answer to two decimal places. 8 gallons (c) According to this graph, what is the most fuel-efficient speed to travel? Explain. Round your answer to the nearest integer. The most fuel-efficient speed is where mpg is at a maximum which is about i 90 mph. The figure below shows the fuel consumption (in miles per gallon, mpg) of a car traveling at various speeds (in mph). fuel consumption (mpg) 40 30 20 10 speed (mph) 10 20 30 40 50 60 70 80 90 100 (a) How much gas is used on a 300-mile trip at 80 mph? Round your answer to two decimal places. 12 gallons (b) How much gas is saved by traveling 70 mph instead of 80 mph on a 200-mile trip? Round your answer to two decimal places. 8 gallons (c) According to this graph, what is the most fuel-efficient speed to travel? Explain. Round your answer to the nearest integer. The most fuel-efficient speed is where mpg is at a maximum which is about i 90 mph.