Which operation should be performed first according to the order of operations?
117 + 45 – 34 • 8 + 36 ÷ 12 – 12
a.
34 • 8
b.
36 ÷ 12
c.
117 + 45
d.
45 – 34

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