If a4 = 2 and a14 = -73 , what is the 28th term?

Answer 1

-73-2 = -75/10 = -7.7 = common difference

a4 = 2

a3 =5.7

a2 =13.4

a1 =21.1

an= a1 + (n-1)d

a28 = 21.1 +(27)(-7.7) = 21.2-207.9= -186.7

a28 =-186.7

assuming it's an arithmetic sequence

It can't be a geometric sequence or all even terms would be the same sign, a4 and a14 are opposite signs.

Of course, it could be endless other sequences, and a28 could be virtually any number, but for standard sequences, odds are -186.7