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 b = -5 and z = 5, what is the value of 7b(b - z)?
| -315 | |
| 350 | |
| 624 | |
| -672 |