9. A city has decided to test and re-paint the fire hydrants. They can test and paint 5 fire hydrants a day. The city has already tested and painted 20 fire hydrants. They do not work on the weekends. Write a recursive formula and an explicit formula for the arithmetic sequence. How many can they get done in 150 days? a. List the first 4 terms of the sequence: | b. Recursive: i. α₁ ii. an c. Explicit: = i. α₁ ii. d= iii. f(n) = iv. f(150) =

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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9. A city has decided to test and re-paint the fire hydrants. They can test and paint 5 fire
hydrants a day. The city has already tested and painted 20 fire hydrants. They do not
work on the weekends. Write a recursive formula and an explicit formula for the
arithmetic sequence. How many can they get done in 150 days?
a. List the first 4 terms of the sequence: |
b.
Recursive:
i. α₁ =
ii. an
c. Explicit:
=
i. α₁
ii. d =
=
iii. f(n)=
iv. f(150) =
Transcribed Image Text:9. A city has decided to test and re-paint the fire hydrants. They can test and paint 5 fire hydrants a day. The city has already tested and painted 20 fire hydrants. They do not work on the weekends. Write a recursive formula and an explicit formula for the arithmetic sequence. How many can they get done in 150 days? a. List the first 4 terms of the sequence: | b. Recursive: i. α₁ = ii. an c. Explicit: = i. α₁ ii. d = = iii. f(n)= iv. f(150) =
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