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 = 6 and y = 3, what is the value of 7a(a - y)?
| 6 | |
| 120 | |
| 21 | |
| 126 |