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 = 8, what is the value of 3a(a - y)?
| 144 | |
| -180 | |
| 459 | |
| 728 |