Math Snap

STEP 1

Assumptions1. The expression represents "a number, $n$, decreased by thirty-one."
. We need to evaluate the expression for $n=29$.

STEP 2

First, let's write the expression that represents "a number, $n$, decreased by thirty-one." In mathematical terms, "decreased by" means subtraction. So, the expression is$$n -31$$

STEP 3

Now, we need to evaluate this expression for $n=29$. That means we substitute $n$ with $29$ in the expression.
$$29 -31$$

Calculate the value of the expression.
$$29 -31 = -2$$So, the statements that are true about the expression and its evaluation are1. The expression for "a number, $n$, decreased by thirty-one" is $n -31$.
2. When $n=29$, the value of the expression $n -31$ is $-2$.