Answer:
answer to what? free points?
Step-by-step explanation:
Is this your entire test?
We have 9 = 3^2;
Then, 9^x = (3^2)^x = 3^(2x);
We solve 3^(2x) = 3^40;
2x = 40;
x = 20 ÷ 2;
x = 10;