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 = 8 and x = 1, what is the value of -9b(b - x)?
| 819 | |
| 88 | |
| -504 | |
| 21 |