Question

Use the recursive formula to answer the question.

a1=20
an=an−1−5
What is the 4th term in the sequence?

Answer 1

To find the 4th term in the sequence, use the given recursive formula a1=20 and an=an-1-5. Calculate the subsequent terms using the recursive formula to find a4.

Step-by-step explanation:

To find the 4th term in the sequence, we can use the recursive formula:

a1 = 20

an = an-1 - 5

We start with the first term, which is given as a1 = 20. Then, we use the recursive formula to calculate the subsequent terms: a2, a3, and a4.

Using the recursive formula, we can write:

a2 = a1 - 5 = 20 - 5 = 15

a3 = a2 - 5 = 15 - 5 = 10

a4 = a3 - 5 = 10 - 5 = 5

Therefore, the 4th term in the sequence is 5.

Answer 2

4th term = 0

an=an-1-5

F to the power of 4 times a = 0