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 = -8 and z = -1, what is the value of 5a(a - z)?
| 30 | |
| 280 | |
| 42 | |
| 96 |