Question

Due today! 20 points!

1. The fifth term of an arithmetic sequence is 9 and the 32nd term is -84. What is the 23rd term?

2. How many terms of the arithmetic sequence 88, 85, 82, . . . appear before the number -17 appears?

Please number the answers

Answer 1

Consider the finite arithmetic sequence,

Use the explicit formula for an arithmetic sequence,

...... (83.84.94.92.91.100

First term of the sequence is

Answer 2

1. -53

2. 35 terms

Explanation: