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 c = 9 and y = -9, what is the value of 9c(c - y)?
| 40 | |
| -210 | |
| 1458 | |
| -504 |