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 = 6 and z = -9, what is the value of 8a(a - z)?
| 64 | |
| 720 | |
| -280 | |
| 16 |