Examine the following expression.
$
p^2-3+3 p-8+p+p^3
$

Which statements about the expression are true? Check all that apply.
The constants, -3 and -8 , are like terms.
The terms $3 p$ and $p$ are like terms.
The terms in the expression are $p^2,-3,3 p,-8, p, p^3$.
The terms $p^2, 3 p, p$, and $p^3$ have variables, so they are like terms.
The expression contains six terms.
The terms $p^2$ and $p^3$ are like terms.
Like terms have the same variables raised to the same powers.
The expression contains seven terms.