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 = -8 and y = 9, what is the value of 5c(c - y)?
| -144 | |
| 126 | |
| 420 | |
| 680 |