The numbers below show the number of mountain bikes sold by classy climbers bike shop each year from 1995 to 1998.
1995 - 115 bikes, 1996 - 130 bikes, 1997 - 145 bikes, and 1998 - 160 bikes.
if this pattern continues, how many mountain bikes would you expect to be sold in 2007?
a.
295 bikes
c.
325 bikes
b.
310 bikes
d.
280 bikes

1995 - 115 bikes
1996 - 130 bikes
1997 - 145 bikes
1998 - 160 bikes

From this we can see that every year the number of bikes increases by 15. So from that we know that...

1999 - 175 bikes 
2000 - 190 bikes 
2001 - 205 bikes 
2002 - 220 bikes
2003 - 235 bikes
2004 - 250 bikes 
2005 - 265 bikes 
2006 - 280 bikes 
2007 - 295 bikes 
 
So in 2007 there will be 295 bikes which is answer choice A. 

Hope this helps! :)