Which of these expressions will return the same value for PV

Write an explicit formula that represents the sequence defined by the following recursive formula:

Akitchen is 12 ft. by 14 ft. with 10 ft. high walls. how much would it cost to put vinyl flooring in this room? $8.80 per ft

Solve the inequaliy: (x^2+2)(x−2)^2(6−2x)> 0