What is the surface area of this thing. i suck at math

Can somebody me out with this question

Choosing a booth location: your manager is sending two people to work at the conference. she wants a booth that will give your company good visibility for no more than 35% of the total budget ($3000). the conference coordinator just told you there are only five booths left. which booth will you choose? write the inequality that shows how much money you can spend on the booth simplify the inequality that shows how much money you can spend on the booth.

Asequence is defined recursively using the formula f(n + 1) =f(n) - 5. which sequence could be