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 z = 5, what is the value of 4a(a - z)?
| 504 | |
| 252 | |
| 126 | |
| -108 |