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 = 5, what is the value of -5a(a - y)?
| 450 | |
| 60 | |
| -630 | |
| 135 |