Driving at a speed of 75 mph, a Mini Cooper's fuel efficiency is 29 miles per gallon. If the driver slows to
a speed of 60 mph, he will have a fuel efficiency of 34
miles per gallon. What is the average rate of change of
the fuel efficiency as the speed drops from 75 mph to
60 mph?

What is the least common factor of 6 and 8

The wheels of a bicycle have a diameter of 70cm. how many meters will the bicycle travel if each wheel makes 50 revolutions

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years