Please Help me i dont understand this.

2. (5 points) Write a recursive rule for the arithmetic sequence: 3.9, 8.2, 12.5, 16.8, 21.1, ...

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

Ineed in figuring out this problem.

15 points what is the end behavior of this graph? & what is the asymptote of this graph?