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 = 7 and z = 9, what is the value of -2c(c - z)?
| -18 | |
| -756 | |
| -512 | |
| 28 |