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 = -7 and y = 6, what is the value of 9c(c - y)?
| 162 | |
| 54 | |
| -72 | |
| 819 |