The total profit (in dollars) from the sale of x cell phones is P(x) = 15x – x² – 70 for 0

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter4: Polynomials
Section4.6: Multiplying Polynomials
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The total profit (in dollars) from the sale of
x cell phones is P(x) = 15x -x² - 70 for
1
.2
4
0<x<60. Let P(50) = 55.
a) Find P'(50) and write a sentence to
explain the meaning of this number in
terms of the change in profit and cell
phones.
b) Use the values of P(50) and P'(50) to
estimate the value of P(54).
Hint: Recall that P(50) = 55 and you
found P'(50) in part a.
Transcribed Image Text:The total profit (in dollars) from the sale of x cell phones is P(x) = 15x -x² - 70 for 1 .2 4 0<x<60. Let P(50) = 55. a) Find P'(50) and write a sentence to explain the meaning of this number in terms of the change in profit and cell phones. b) Use the values of P(50) and P'(50) to estimate the value of P(54). Hint: Recall that P(50) = 55 and you found P'(50) in part a.
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