Answer this please, A, B, C or D only!

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Suppose sat writing scores are normally distributed with a mean of 497 and a standard deviation of 109. a university plans to award scholarships to students whose scores are in the top 2%. what is the minimum score required for the scholarship? round your answer to the nearest whole number, if necessary.