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 = -1 and z = 7, what is the value of 3a(a - z)?
| 180 | |
| 16 | |
| 24 | |
| -504 |