Is -4, 12, -36, 108, -324 arithmetic or geometric

Geometric

Step-by-step explanation: An arithmetic sequence is a sequence with a common difference. In other words, it has a number that is repeatedly added or subtracted to reach the next term. In this problem, that's not the case. We are not going up or down by the same number which means it's geometric.

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.