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 z = -6, what is the value of 7a(a - z)?
| 630 | |
| 49 | |
| 96 | |
| 40 |