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An economist uses the model P(x) = -0.05x³ +3.25x² - 10x + 20 to estimate the price of a stock over the next 8 years. When does the stock reach at least $34.24? Enter a whole number of years. (Hint: An answer of 6.23 years refers to being in the seventh year.)

An economist uses the model P(x) = -0.05x³ +3.25x² - 10x + 20 to estimate the price of a stock over the next 8 years. When does the stock reach at least $34.24? Enter a whole number of years. (Hint: An answer of 6.23 years refers to being in the seventh year.)

Advanced Engineering Mathematics
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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-.05x^3 + 3.25x^2 - 10x + 20 = 34.24 Easiest to solve this by a graph: -20 In the 5th year.... -60- -40 20- O (4.373,-34.24) 20 40
Transcribed Image Text:-.05x^3 + 3.25x^2 - 10x + 20 = 34.24 Easiest to solve this by a graph: -20 In the 5th year.... -60- -40 20- O (4.373,-34.24) 20 40
An economist uses the model P(x) = -0.05x³ +3.25x² - 10x + 20 to estimate the price of a stock over the next 8 years. When does the stock reach at least $34.24? Enter a whole number of years. (Hint: An answer of 6.23 years refers to being in the seventh year.)
Transcribed Image Text:An economist uses the model P(x) = -0.05x³ +3.25x² - 10x + 20 to estimate the price of a stock over the next 8 years. When does the stock reach at least $34.24? Enter a whole number of years. (Hint: An answer of 6.23 years refers to being in the seventh year.)
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