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 a = 4 and y = 7, what is the value of a(a - y)?
| 672 | |
| -18 | |
| -264 | |
| -12 |