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 = 9, what is the value of 8a(a - z)?
| -784 | |
| -24 | |
| -144 | |
| -72 |