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 = 7 and z = -7, what is the value of b(b - z)?
| -36 | |
| -160 | |
| 98 | |
| 0 |