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 = 5 and x = -1, what is the value of 3b(b - x)?
| -128 | |
| -50 | |
| -20 | |
| 90 |