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 = -8 and z = -9, what is the value of 2c(c - z)?
| -216 | |
| 20 | |
| -16 | |
| 42 |