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 = 4 and z = -1, what is the value of 3c(c - z)?
| -720 | |
| 56 | |
| 60 | |
| 216 |