need help with algebra questions? details of questions below.

Please complete the following questions. It is important that you show all work you did to solve the problems when you submit your work. This includes any calculations, diagrams, or graphs that helped you solve it.

1. OPEN ENDED Write an arithmetic series for which S5 = 10.
2. OPEN ENDED Write a geometric series for which r = ½ and n = 4.
3. Writing in Math Use the information on page 649 (attached below) to explain how arithmetic series apply to amphitheaters. Explain what the sequence and the series that can be formed from the given numbers represent, and show two ways to find the seating capacity of the amphitheater if it has ten rows of seats.
4. Writing in Math Use the information on page 663 (attached below) to explain how e-mailing a joke is related to a geometric series. Include an explanation of how the situation could be changed to make it better to use a formula than to add terms.

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GET READY for the Lesson
Austin, Texas has a strong musical
tradition. It is home to many indoor and
outdoor music venues where new and
established musicians perform regularly.
Some of these venues are amphitheaters
that generally get wider as the distance
from the stage increases.
Suppose a section of an amphitheater can
seat 18 people in the first row and each
row can seat 4 more people than the
previous row.
GET READY for the Lesson
Suppose you e-mail a joke to three friends on Monday. Each of those
friends sends the joke on to three of their friends on Tuesday. Each
person who receives the joke on Tuesday sends it to three more people
on Wednesday, and so on.
E-Mail Jokes
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