what is the 41st term -13,-17,-21,-25...
adds -4 each timefirst term is -13an=a1+(n-1)dd=common differencea1=first terman=-13+(n-1)(-4)an=-13-4(n-1)41 terma41=-13-4(41-1)a41=-13-4(40)a41=-13-160a41=-173-173