X∞
n=1
n(n + 2)(x − 4)n
.

Tommy buys a sweater that is on sale for 40% off the original price. the expression p -0.4p can be used to find the sale price of the sweater, where p is the original price of the sweater. if the original price of the sweater is 50, what is the sale price?

If the perimeter of the garden is 37 ft. the width is x and the length is 15 ft. what is the width of the garden in feet?

Find the rate of change for the situation. you run 7 miles in one hour and 21 miles in three hours.