

Geometric Sequences
Presentation
•
Mathematics
•
9th - 12th Grade
•
Medium
Abbie Gutzmer
Used 13+ times
FREE Resource
2 Slides • 26 Questions
1
GOAL: To solidify our understanding of exponential and logarithmic equations as they apply to work, including geometric sequences.
2
Multiple Choice
Expand: log6(4y5)
log65 + log64 + log6y
log65 − log64 + log6y
log65 − log64 − log6y
log65 − log64y
3
Multiple Choice
Expand: log4(3x2)
2log43x
2log43 + 2log4x
log43 + 2log4x
2log43 + log4x
4
Fill in the Blanks
Evaluate using Change of Base Formula: log45 Round to the nearest hundredth.
5
Fill in the Blanks
Evaluate using Change of Base Formula: log94 Round to the nearest hundredth.
Type answer...
6
Multiple Choice
True or False:
log 12 - log 4 = log 8
True
False
7
Multiple Choice
Solve log2(x+8)=log264
x=16
x=24
x=56
x=40
8
Multiple Choice
Solve log8(3x+7)=log8(7x+4)
x=43
x=3
x=6
x=34
9
Multiple Choice
Solve log6x+log69=log654
x=6
x=45
x=7
x=36
10
Multiple Choice
11
Multiple Choice
12
Multiple Choice
13
Multiple Choice
Solve for x:
12⋅ 2(x−7)=24
x=8
x=−6
x=19
x=71
14
Multiple Choice
Using a calculator approximate ln 2.3 to the nearest thousandth
.8322
.8329
.8320
.9238
15
Multiple Choice
ln(2) = x
16
Multiple Choice
7e(3x-5) = 49
17
Multiple Choice
What do you notice about the following sequence;
40, 120, 360, 1080, 3240, ...
Each term gets multiplied by 3; starting with 40.
Each term increases by 80
Each term is raised to the third power.
There is no relationship between the values.
18
Multiple Choice
What do you notice about the following sequence;
256, 192, 144, 108, 81, ...
Each term is multiplied by 0.75
Each term is divided by 0.75
Each term is doubled
There is no relationship between the terms.
19
Multiple Choice
So - considering all of that. Given the sequence;
3, 6, 12, 24, ...
Find the next two terms
36, 48,...
48, 96,...
27, 30,...
None of these are the correct next terms.
20
21
Multiple Choice
22
Multiple Choice
23
Multiple Choice
an = 4(5)n-1
24
Multiple Choice
If we say a value DECREASES at a rate of 22%, what is the multiplier (r) we would use? Fee free to pick a value and find the first few terms.
22
0.22
78
0.78
25
Multiple Choice
A sequence starts at 100 and decreases by 43%. What is the multiplier (r) we would use? Again, if needed pick a value and find the first couple of terms to evaluate.
0.43
0.57
43
57
26
Multiple Choice
A sequence starts at 100 and decreases by 43%. Find the EXPLICIT formula for this sequence.
an = 100 * 0.57n-1
an = 100 * 0.43n-1
an = 100 * 1.57n-1
an = 100 * 1.43n-1
27
Multiple Choice
A sequence starts at 100 and decreases by 43%. Find the value of the 10th term. (n = 10)
a10 = 0.6351
a10 = 0.0216
a10 = 0.3620
a10 = 9099.060
28
Open Ended
Will a geometric sequence ever lead to an output of zero? Why or why not?
GOAL: To solidify our understanding of exponential and logarithmic equations as they apply to work, including geometric sequences.
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