I NEED HELP ASAP ILL GIVE 15 POINTS

What is the average rate of change for this function for the interval from x=2 to x=4 ?

3women sell hats at a craft fair weekly. the money they make at the fair is split into categories. 9% goes to pay taxes. $55 goes to pay rent for the space they sell in. the rest is split between the women. if the group make $706 at the fair, how much does each women get paid once the money is divided

We have 339 ounces of jam to be divided up equally for 12 people how muny ounces will each person get