Answer:
$ 157838.60 in 5 years
Step-by-step explanation:
r = 1.06
sum of geometric seq = a1 ( 1-r^n)/(1-r) n = 5
28000 ( 1 - 1.06^5) / ( 1-1.06) = 157838.60
origional price of $32.
marked up 10%- $3.20
new price- $35.20
a=31
1/2(a-9)=11
a-9=22
a=22+9