Exercise 20 Page 318

To write a recursive rule for the given sequence, we will use a table to organize the terms and find the pattern. Let's put in the table coordinates of the points from the graph.

The sequence is arithmetic with first term a_1=35 and common difference d=- 11. To write the recursive rule, we will substitute these values into the general formula for the recursive rule of an arithmetic sequence. la_1=a a_n=a_(n-1)+d ⇒ la_1= 35 a_n=a_(n-1) - 11