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 = 8 and z = -9, what is the value of 9a(a - z)?
| 153 | |
| 1224 | |
| 147 | |
| 27 |