Kylie's first month collection, a1= $ 145
Second month collection , a2= $145+ 20
Third month collection, a3 = $145 +2*20
.
so for n months collection = an-1+20
We get an= 20 + an-1 and a1=145
Answer:
to me it looks like B but i could be wrong
Step-by-step explanation:
simple random sampling
228.6 cm