Question 18 Look at this sequence.

95, 80, 65, 50, ...
Which function represents this sequence?

A
a(n)=−15n+110

B
a(n)=110n−15

C
a(n)=95n−15

D
a(n)=−15n+95

The function which represents this sequence will be:

Hence, option (A) is true.

Step-by-step explanation:

Given the sequence

An arithmetic sequence has a constant difference 'd' and is defined by  

computing the differences of all the adjacent terms

As the difference is the same, so

as

Thus, substituting , in the nth term of an arithmetic sequence

Therefore, the function which represents this sequence will be:

Hence, option (A) is true.