Question

please just somebody answer this question!!!!!!!!!!!! no one answering . and if you don't know the answer then just scroll and ignore -_-​

Answer 1

Answer:

d) -1

Step-by-step explanation:

If 9^-3m ÷ 9^-4 = 9^7

Since, bases are same, powers can be equated.

-3m - (-4) = 7

-3m + 4 = 7

-3m = 7-4

-3m = 3

m = -1