Please help i need to get these right or i fail WILL GIVE BRAINLEST!!!

First question the answer is the third one, 4*4*4*4*4

Second: Part A

I think one side is 25 yards, so answer is 25². that makes the area of the chicken pen  to be 625 sqaure yards.

Part B a yard is exactly three feet, so the power becomes 75², and the area is 5625 square feet.

third question: not sure what the only use once is, but 2^4 and 4² could be the first one, they both equal 16. The second could be 3^4 and 9^2, which are both 81.

Give to other guy

Step-by-step explanation:he deserves it

x+y=90

x=30-y=x

step-by-step explanation:

if you understand you will get the answer