What are the foci of the hyperbola with equation 9y^2 - 16x^2 = 144?
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Answer:
The rate of change in number of subscriber for the six years is 3.62%
Step-by-step explanation:
Given as :
The initial subscriber of newspaper = p = 10225
The subscriber of newspaper after 6 years of publish = P = 8200
The time period = t = 6 years
Let The average yearly rate of change = r%
<u>Now, According to question</u>
The subscriber of newspaper after n years = initial subscriber ×
Or, P = p ×
Or, 8200 = 10225 ×
Or, =
Or, 0.80195 =
<u>Taking power both side</u>
So, =
Or, 0.9638 = 1 -
Or, = 1 - 0.9638
Or, = 0.0362
Or, r = 0.0362 × 100
i.e r = 3.62
So, The rate of change in subscriber = 3.62%
Hence, The rate of change in number of subscriber for the six years is 3.62% . Answer