Find a1 for the given geometric series.
sn=48455, r=3.2, n=3?

 Sn = a1 ( 1 - r^n) / (1 - r) 
 a1=Sn(1-r) / (1 - r^n) 
by putting values we get
a1 = 48455(-2.2) / (1 - (3.2^5) )
a1 = (-106601) / (-31.768) 
a1 = 3355.609418 
a1=3356
hope this helps

Yeah she/ he needs look how long that is man