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 = 1 and x = 4, what is the value of -5a(a - x)?
| -450 | |
| 15 | |
| 135 | |
| -216 |