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 = -4, what is the value of 2c(c - z)?
| -60 | |
| 64 | |
| 80 | |
| 420 |