Okay, so, for #2, you needed to circle "x" for your answer. "X" is a variable, not a term. Any letter used in an equation or expression is a variable.
And for #3, you needed to circle the following numbers: 2, 3, 4, and 1. The exponent 2 is not a term, it's used as a power. A term is a variable or a number separated by an operation like addition or subtraction.
I hope I helped :)