1. Silent Do Now (5 min.) *Create new weekly sheet & take out homework on arithmetic sequences!
Review of Lesson 1-4
ANSWER THESE 5 QUESTIONS TO SEE IF YOU ARE PREPARED FOR YOUR QUIZ!
Is the following a function? Why or why not?
(3, 2) (4, 4) (3,7)
2. What is the domain and range of the relation above?
3. If f(x) =2x + 4 and g(x) = 3x + 2, find f(x) + g(x) and then find f(x) * g(x)
4. What are the x and y intercepts of the graph to the right?
5. Sarah wants to take piano lessons. Her parents lend her $100 and say that she must pay them back $10 each week. What is the function that represents this scenario?

2. Agenda Review Do Now Take Quiz
Review Exit Ticket & Review Arithmetic Sequences
Begin Geometric Sequences!

3. Geometric Sequence
A sequence of terms that have a common ratio between them

4. Explicit Formula
Formula used to find the nth term of a sequence

5. Explicit Formula for Geometric Sequence
Where a1 is the first term in the sequence and
r is the common ratio

6. Geometric Sequence
Example 1: Find the common ratio
r = 2

7. r = 1/4 Geometric Sequence Example 2 : Find the common ratio
256, 64, 16, 4, …
r = 1/4

8. Example 3: Find the common ratio, the explicit formula, and the seventh term.
6, 3, 1.5, 0.75 …

9. Example 4: Find the common ratio, the explicit formula, and the tenth term.
-4, -12, -36, -108 …

10. Example 5 : The fifth term is 1,792. The common ratio is 4
Example 5 : The fifth term is 1,792. The common ratio is 4. Write the explicit formula.

11. Example 6 : During the month of October, a few teachers decided to spread some holiday fun by starting a game of getting “boo”ed. On the first day, 3 teachers were given “boo” bags and directions to “boo” 2 other teachers. If every teacher followed the directions to “boo” 2 teachers with candy and a sign, find the following:
a. The explicit formula b. The first 5 terms
3, 6, 12, 24, 48…

12. Independent Practice