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 = -3 and x = -4, what is the value of -7a(a - x)?
| 30 | |
| 198 | |
| 21 | |
| -7 |