Step 2, she didn't multiply 8 by 0.75.
Hope this helps :)
I think its c. even though i would qant the numbers to be clearer
16)
s^1/4 * s^1/4 * s^1/4 * s^1/4 = s^(1/4 + 1/4+1/4+1/4) = s^4/4 = s
Answer is s
15) Answer is 1. (because any number to the 0 exponent is equal 1 , except 0)
17)
= (t^3/6)^2 = t^6/6 = t
Answer is t
I believe New York City was the first capital of the US.