Write a variable expression to describe the rule for the sequence. then find the 10th term. 15,13,11, 9..

The variable expression to describe the rule of sequence is And the 10th term is -3

Solution:

The given series is 15, 13, 11, 9 ….

The given series is arithmetic series with common difference "-2"

From the above series we get,

First term

Second term

And so on.

Common difference =

The nth term of Arithmetic progression is given as:

Where "a" is the first term of sequence

"n" is the nth term

"d" is common difference between terms

Which is the required variable expression to describe the rule for the given sequence

Finding 10th term:

Substitute n = 10 in above variable expressi

Hence the 10th term is -3

we'll this would mean that the dunk tank and the bounce house are the same for 20 hours because the 2 represents that the two activities, and the 20 represents the amount of hours they both are. so with this said, it means that the answer is c. the costs for a dunk tank and bounce house are the same for 20 hours.

c.the costs for a dunk tank and bounce house are the same for 20 hours.

hope this .