Question

answer this quetion​

Answer 1

$\: \: \: \: \: \: \: \: {9}^{n + 1} \div {3}^{n + 3} = 81 \\ = > {3}^{2(n + 1)} \div {3}^{n + 3} = {3}^{4} \\ = > {3}^{2n + 2} \div {3}^{n + 3} = {3}^{4} \\ = > {3}^{2n + 2 - n - 3} = {3}^{4} \: \: \\ \: \: \: \: \: \: \: \: \: \: \: \: \: | \: \: because \: {a}^{m} \div {a}^{n} = {a}^{m - n} \\ = > 2n + 2 - n - 3 = 4 \\ = > n - 1 = 4 \\ = > n = 5$

Answer 2

D is the right answer.

step by step explaination attached above