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 b = -2 and y = 1, what is the value of 9b(b - y)?
| 144 | |
| 15 | |
| 80 | |
| 54 |