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 = 1 and z = -9, what is the value of -9c(c - z)?
| -90 | |
| -40 | |
| -432 | |
| 616 |