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 = -3 and x = -6, what is the value of -9b(b - x)?
| 630 | |
| -4 | |
| 81 | |
| 90 |