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 = 3 and z = 6, what is the value of -a(a - z)?
| 0 | |
| 9 | |
| -240 | |
| 144 |