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 = -6 and x = -3, what is the value of 9b(b - x)?
| 72 | |
| 162 | |
| -30 | |
| -144 |