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 = -1 and y = 1, what is the value of 2a(a - y)?
| -15 | |
| 72 | |
| 40 | |
| 4 |