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 = -3 and z = -9, what is the value of -9b(b - z)?
| 468 | |
| 30 | |
| 315 | |
| 162 |