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 c = 5 and z = 9, what is the value of 5c(c - z)?
| 324 | |
| 147 | |
| 6 | |
| -100 |