a. for Tammy's car
after 150 miles, according to the graph, the number of gas remaining is 11 gallons,
for Manuel's car
after 150 miles, the number of gas remaining is 9 gallons,
Answer 1: Manuel's car
11 - 9 = 2 gallons
Answer 2: 2 gallons less
b. this is
so according to the graph tanks hold the same amount of gas after 300 miles
Answer 1: 300 miles
Answer 2: Manuel's car