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 = 6 and x = 1, what is the value of 9c(c - x)?
| 270 | |
| 12 | |
| 135 | |
| 6 |