A company estimates that it will sell N(t) hair dryers after spending $t thousands on advertising as given by the following equation. For which values of t is the rate of sales N'(t) increasing? N(t)= -3t³+ 450t² - 21,600t + 1,100, 40 ≤t≤ 60 A. 4040 C. 40
A company estimates that it will sell N(t) hair dryers after spending $t thousands on advertising as given by the following equation. For which values of t is the rate of sales N'(t) increasing? N(t)= -3t³+ 450t² - 21,600t + 1,100, 40 ≤t≤ 60 A. 4040 C. 40
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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please use calculus - 2nd derivative (not graphing calculator) to show work
![A company estimates that it will sell N(t) hair dryers after spending $t thousands on advertising as given by the following equation. For
which values of t is the rate of sales N'(t) increasing?
- 3t³. +450t² - 21,600t +1,100, 40 ≤t≤60
N(t)= -
A. 40<t<50
B. t> 40
C. 40<t<60
D. 50<t<60](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5b3f33e4-f146-4d40-b850-891458912994%2Fb40eb622-fa83-476a-aa08-ee99844ea23e%2Fa72gk7d_processed.png&w=3840&q=75)
Transcribed Image Text:A company estimates that it will sell N(t) hair dryers after spending $t thousands on advertising as given by the following equation. For
which values of t is the rate of sales N'(t) increasing?
- 3t³. +450t² - 21,600t +1,100, 40 ≤t≤60
N(t)= -
A. 40<t<50
B. t> 40
C. 40<t<60
D. 50<t<60
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