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 = 1, what is the value of -5a(a - x)?
| -486 | |
| 216 | |
| 768 | |
| -280 |