The answer will be d but I am not fully sure.
I'm guessing you mean:

If not, correct me.
So, then the perimeter of a square is just 4*A, which in this case would be:

And that would be your answer:

units²
Answer:
Joshua's account had a greater change.
Step-by-step explanation:
Both accounts had $100
Joshua's account now has $67.25 which means he used $32.75
Crystal's account now has $131.97 which means he saved $31.97.
Joshua had a greater change of balance.
Answer:
Z = (42-20)/4 = 5.5
Z = X-μ / σ
Step-by-step explanation:
The answer would be -4 because you are dividing by -5