Answer :
0. Each time you're adding 0.75, so adding [tex]-0.75+0.75=0[/tex]!
In this sequence a=-3
d=-2.25-(-3)
d=-2.25+3
d=0.75
So next term is 5th term so it is a+4d
=-3+4(0.75)
=-3+3
=0
So next term is 0
d=-2.25-(-3)
d=-2.25+3
d=0.75
So next term is 5th term so it is a+4d
=-3+4(0.75)
=-3+3
=0
So next term is 0