How do you factor out the coefficient of 2.2x+4.4

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

Select a graph that have an equation with a < 0

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)