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 = 9 and z = 6, what is the value of -9a(a - z)?
| -243 | |
| -120 | |
| -416 | |
| -84 |