I do not understand this geometry problem.

Can someone me i’m confused. will give brainliest and a whole bunch of points

To decrease an amount by 16% what single multiplier would you use

Fill in the missing exponents in each box and show how you found the answer. (4 points: 2 points for each correct answer with work shown) c. (9^4)^? =9^1 d.(5^? )^3=5^1 *question marks represent the boxes