Question

The first term of an arithmetic sequence is 4. The rule a↓n=a↓n+1 + 5 can be used to find the next term of the sequence.

a 4
b 5
c 9
d -1​

Answer 1

c. 9

Explanation:

Using the rule, substituting 4 for a↓1, we find the next term to be ...

`a_2 = a_1 +5\\\\a_2=4 +5\\\\\boxed{a_2=9}`