A12-ft-by-15-ft rectangular swimming pool has a 3-ft-wide no-slip surface around it. what is the outer perimeter of the no-slip surface? a. 78 ft. b. 78 ft2. c. 198 ft. d. 198 ft2

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2