1. how many decision variables are there?

2. how many constraints are there? (don't include the trivial constraint)

3. How many constraints are

4. How many Constraints are =>

5. is there a ratio constraint

For a telephone survey, a marketing research group needs to contact at least 150 wives, 120 husbands, 100 single adult males, and 110 single adult females. It costs $2 to make a daytime call and because of higher labor costs) $5 to make an evening call. The table below lists the results. Because of limited staff, at most half of all phone calls can be evening calls. Person Responding Wife Husband Single Male Single Female None % Daytime Calls 30 10 10 10 40 9 Evening Calls 30 30 15 20 5 Teaching Staff