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 = 1 and y = 7, what is the value of 3c(c - y)?
| -18 | |
| 468 | |
| 16 | |
| 640 |