When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
If a = -9 and x = 4, what is the value of a(a - x)?
| 117 | |
| -72 | |
| -20 | |
| -49 |