Write an expression for the n th term of the sequence $3,8,13,18,23,\dots$ Assume that n begins with 1.

A) $a_n=3+5n$
B) $a_n=3+6n$
C) $a_n=3+6(n+1)$
D) $a_n=3+5(n-1)$
E) $a_n=3+5(n+1)$

In one year, the CPI increased from 105.6 to 106.7. In order to have the same purchasing power as $100 at the start of the year, you would need $103.14 at the end of the year.