Question

Find the 5th term in the table below.

1 2 3 4 5

45 40 35 30 ? this time no anwser's you have to figur out ill tell you if your right

Answer 1

25.

Explanation:

This is called an Arithmetic sequence with common difference -5.

Adding -5 to the 4th term (30) gives the fifth term (25).

The explicit formula for the nth term:

an = a1 + d(n - 1) where a1 = first term and d = the common difference.

So here it is an = 45 + (-5)(n - 1)

= 45 - 5n + 5

= 50 - 5n.