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 = -5 and y = -6, what is the value of 9b(b - y)?
| -40 | |
| -45 | |
| 42 | |
| -144 |