Year
1990
1995
2000
2005
2010
Cell Phone
Subscribers (millions)
4.9
38.3
118.1
229.8
360.4
Use the exponential regression to find an
equation that fits the data, where x is the years
since 1990.

Year 1990 1995 2000 2005 2010 Cell Phone Subscribers millions 49 383 1181 2298 3604 Use the exponential regression to find an equation that fits the data where class=

Respuesta :

The exponential regression that shows the relationship between the number of subcribers in millions (y) since 1990 is y = 4.9(1.37)ˣ

How to solve an exponential function?

Let y represent the amount of subscribers in millions, x years since 1990.

From the table; at point (0, 4.9):

y= abˣ

4.9 = ab⁰

a = 4.9

At point (10, 118.1)

118.1 = 4.9(b)¹⁰

b = 1.37

The exponential regression that shows the relationship between the number of subcribers in millions (y) since 1990 is y = 4.9(1.37)ˣ

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