SOLUTION: John saves $3500 the first month and every month later decreases it by $75. a) How much will John save in the 11th month? b) How much will he save after two (2) years?

Question 1140165: John saves $3500 the first month and every month later decreases it by $75.
a) How much will John save in the 11th month?
b) How much will he save after two (2) years?
Answer by dkppathak(439) (Show Source): You can put this solution on YOUR website!
John saves $3500 the first month and every month later decreases it by $75.
a) How much will John save in the 11th month?
b) How much will he save after two (2) years?
solution
3500 3425 3350 --------- 11th -------------
a=3500 d=-75
a11=a+10d =3500+10x-75
=3500-750=2750
after 2 years means after 24 months means a25
a25=a+24d=3500+24x-75
=3500-1800=1700
sving in 11th month=$2750
after 2 years saving=$1700
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