I agree with you on this problem. It is A. If that is the final answer, the negative exponent must be flipped in order to be positive. According to the equation, it is not positive so it is not a simpflied polynomial.
Plug the 5 into the x in the equation 2x. it should be 2(5) which equals 10.
1) 1
2) PA: between 2 and 3.
2) PB: Unsure about it.
