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 = -4 and z = 2, what is the value of 9b(b - z)?
| -54 | |
| 216 | |
| 270 | |
| -16 |