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 = -8, what is the value of 9a(a - y)?
| -250 | |
| -63 | |
| -540 | |
| 189 |