The perimeter of a rectangle is 35 cm. The rectangle s area in sq. cm) as a function of its length (in cm) is graphed What is the approximate average rate at which the area decreases, as the rectangle's length goes from 13 cm to 16 cm?

Raymond just got done jumping at super bounce trampoline center. the total cost of his session was $43.25 . he had to pay a $7 entrance fee and $1.25 for every minute he was on the trampoline. write an equation to determine the number of minutes (t) that raymond was on the trampoline.