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 = 7 and y = -2, what is the value of -9a(a - y)?
| 72 | |
| -42 | |
| -567 | |
| 360 |