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 = 3 and x = -1, what is the value of a(a - x)?
| 12 | |
| 18 | |
| 320 | |
| -180 |