1. Find the 5th term of an arithmetic sequence whose 3rd term is 35 and whose 10th term is 77.

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter9: Sequences, Probability And Counting Theory
Section9.1: Sequences And Their Notations
Problem 4SE: What happens to the terms an of a sequence when there is a negative factor in the formula that is...
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DIFFERENTIATING A SERIES FROM A SEQUENCE

1. Find the 5th term of an arithmetic sequence whose 3rd term is 35 and whose 10th term is 77.

2. Suppose that the fourth term of a geometric sequence is 2/9 and the 6th term is 8/81. Find the first term and the common ratio.

3. Marcus has started an exercise program. The first day he worked out for 30 minutes. Each day for the next six days, he increased his time by 5 minutes. (a) Write the sequence for the number of minutes that Marcus worked out for each of the seven days. (b) How many minutes did Marcus work out in all for the seven days?

4. Jelian wants to increase her vocabulary. On Monday, she learned the meanings of 2 new words. Each other day that week, she learned twice the number of words she learned the previous day. (a) Write the sequence for the number of new words that Jelian learned each day for a week. (b) How many words did Jelian learn for the week? 

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