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 = -2, what is the value of -7c(c - z)?
| -16 | |
| 192 | |
| -168 | |
| 140 |