steviedude316

23.06.2019 • 

Mathematics

There are 15 people in the chorus. each year, the number of people in the chorus increases by 12%. there are 30 people in the band. each year, 2 new people join the band. part a: write functions to represent the number of people in the chorus and the number of people in the band throughout the years. (4 points) part b: how many people are in the chorus after 9 years? how many people are in the band after the same number of years? (2 points) part c: after approximately how many years is the number of people in the chorus and number of people in the band the same? justify your answer mathematically.

Ответ:

jj1077348

06.10.2020

Mathematics

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Part A
Chorus:
Expontential growth = b*a^x 
b = 15
a = 1.12              (a= r+1), r = 12%

Which gives a function of f(x) = 15*1.12^x 

Band
Linear growth = ax+b
a = 2
b = 30

Which gives a function of g(x)=2x+30

Part B:
f(9) = 15*1.12^9 = 41.59
g(9) = 2*9+30 = 48

Part C:
This is probably problem solving, where you're allowed to use calculators and other softwares.

Therefore you can use different softwares, and make f(x) = g(x).
I did this, and got it to 10.95427141

[email protected]

Ambitious

 

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Ответ:

ryantrajean7

13.04.2022

Mathematics

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Me gurl

Step-by-step explanation:

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