Neeed help on this math assignment

Question

The number of cars sold weekly by a new automobile dealership grows according to a linear growth model. The first week the dealership sold five cars (P0=5P0=5). The second week the dealership sold cars (P1=13P1=13).

Write the recursive formula for the number of cars sold, PnPn, in the (n+1n+1)^th week.

and the recursive

Answer 1

p0=5

p1=13

p2=21

p3=29

p4=37

p5=45

...

pn=p1+d(n-1)=13+8(n-1)

=13+8n-8=5+8n

pn =5+8n

or

pn =8+pn-1

nth term = 8+ the previous term

or

pn+1=8+pn

n+1th term = 8+the nth term

8=d=common difference of an arithmetic sequence