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 = 4 and y = 6, what is the value of 9b(b - y)?
| 0 | |
| 240 | |
| 72 | |
| -72 |