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 = -4 and y = -5, what is the value of -9a(a - y)?
| -14 | |
| 36 | |
| 60 | |
| 80 |