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 x = 8, what is the value of 5c(c - x)?
| 77 | |
| 112 | |
| -15 | |
| 640 |