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 b = -1 and x = 4, what is the value of -4b(b - x)?
| -18 | |
| -20 | |
| -280 | |
| -144 |