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 x = 5, what is the value of -2a(a - x)?
| 64 | |
| -40 | |
| -28 | |
| 72 |