Find the sum of the first 10 terms of the arithmetic sequence where the first term is 2 and the common difference is 3.

In your own words, explain how to determine whether a sequence is geometric.

In your own words, explain how to write the terms of a sequence when you know the formula. Show an example to illustrate your explanation.ä

Solve each problem. Find the sum of the first 30 terms of an arithmetic sequence with 25th term of 10 and a common difference of 12.

Solve each problem. Find the sum of the first 100 terms of an arithmetic sequence with 15th term of 86 and a first term of 2.

Keisha devised a week-long study plan to prepare for finals. On the first day, she plans to study for 1 hour, and each successive day she will increase her study time by 30 minutes. How many hours will Keisha have studied after one week?

Find the sum of the first n terms of each arithmetic series. 5+7+9+(to15terms).

A ladder has 15 tapered rungs, the lengths of which increase by a common difference. The first rung is 5 inches long, and the last rung is 20 inches long. What is the sum of the lengths of the rungs?

Find the eighth term of the arithmetic sequence whose first term is 4 and whose common difference is -7.

Find the ninth term of the arithmetic sequence whose first term is 6 and whose common difference is -5.