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 = -2 and z = -1, what is the value of 9c(c - z)?
| 240 | |
| 30 | |
| 18 | |
| 126 |