If a man wishes to glue 5 lengths of board each 2'3" long, what is the total length? (A) 10'
(B) 10'3"
(C) 11'
(D) 11'3"
(E) 12

The answer is D: 11'3"

Step-by-step explanation:

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