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 a = -4 and z = 4, what is the value of 9a(a - z)?
| -192 | |
| 288 | |
| 105 | |
| 936 |