Roxanne's car used 4.8 gallons of gasoline to drive 124 miles. If Roxanne has 180 more miles to go, which is closest to the additional number of gallons of gasoline the car will use to complete the trip?
First, we need to figure out how many gallons of gasoline Roxanne's car uses per mile. We can do this by dividing 4.8 (the gallons of gasoline used) by 124 (the miles driven):
4.8 gallons ÷ 124 miles = 0.0387 gallons per mile
This means that Roxanne's car uses approximately 0.0387 gallons of gasoline for every mile driven.
To find out how much gasoline the car will use for the remaining 180 miles, we can multiply the number of miles by the gallons per mile:
0.0387 gallons per mile × 180 miles = 6.966 gallons
Rounded to the nearest tenth, the answer is 6.97 gallons. Therefore, the closest answer is C) 7 gallons.