The monthly revenue R (in dollars) of a telephone polling service is related to the number r of completed responses by the function R(x) : - 13000 + 30/3.5x² + 25x 0

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter9: Quadratic Functions And Equations
Section9.6: Solving Quadratic Equations By Using The Quadratic Formula
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The monthly revenue R (in dollars) of a telephone polling service is related to the number a of completed
responses by the function
R(x) =
- 13000 + 30/3.5a2 + 25x 0< x < 1000
If the number of completed responses is increasing at the rate of 10 forms per month, find the rate at which the
monthly revenue is changing when x = 500.
The monthly revenue is changing by $
Transcribed Image Text:The monthly revenue R (in dollars) of a telephone polling service is related to the number a of completed responses by the function R(x) = - 13000 + 30/3.5a2 + 25x 0< x < 1000 If the number of completed responses is increasing at the rate of 10 forms per month, find the rate at which the monthly revenue is changing when x = 500. The monthly revenue is changing by $
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