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 y = -3, what is the value of -3a(a - y)?
| -324 | |
| 180 | |
| 504 | |
| 144 |