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 = -5 and x = 4, what is the value of 3c(c - x)?
| 504 | |
| -40 | |
| 135 | |
| -648 |