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 = 7 and z = 3, what is the value of -2a(a - z)?
| 192 | |
| 45 | |
| -56 | |
| 40 |