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 = 9 and y = -7, what is the value of 7a(a - y)?
| -165 | |
| 1008 | |
| 60 | |
| 90 |