find the second and third term of the arithmetic sequence –7 __ __ –22 –27

Question

I think the answer is D

A. -12, -15
B. -17, -12
C. -10, -17
D. -12, -17

Answer 1

D is correct. each term subtracts 5

Answer 2

The function b(n)=6n represents the number of light bulbs b(n) that are needed for n chandeliers. How many light bulbs are needed for 15 chandeliers? i think the answer is C
A.2 light bulbs
B.80 light bulbs
C.90 light bulbs
D.96 light bulbs