Everything except for 4 is correct, number 4 is c.
They are all not functions
The answer is $62.00
Explanation: If you take $48.50 times 6 you get $291 now subtract $291 from $663 you will have an answer of $372 that is how much the total of tables came to now divide 372 by 6 for the number of tables and you will be left with 62
