These are the answer that I got:
A. That means: "The more it costs, the fewer people you can invite."
B. Amount you can spend = M; You will have to come up with this number - whatever you think is reasonable.
C. (C = Cost per person, P = number of people you can invite )
D. You will have two equations. In the first equation, C will be the per-person cost at the first bowling alley. In the second equation, C will be the per-person cost at the second bowling alley.
E. Be sure to think this through. Yes, you will be able to host more guests at the bowling alley with the lowest per-person cost, but is that the only factor you need to consider? What about location? Quality of lanes and bowling equipment? Music? Food? Customer Service? Consider ALL aspects. You might pick the more expensive bowling alley because you feel would have a better experience, or maybe you don't want to invite lots of people anyway.
Hope this helps!