Answer:
C. a n =3000(1.05)n-1
Step-by-step explanation:
Arithmetic sequence formula, it is 1.05 because it increases by 1/20th each time. It is n-1 because n-1 is the correct form of arithmetic sequence formulas, without the n-1 it wouldn't work.
remember when dividing with fractions, you are multiplying by the reciprocal.
this means
D
a
The answer would be the first one, 2s+6.