Biologists have proposed a cubic polynomial to model the length L of Alaskan rockfish at age A: L = 0.0155A³ – 0.372A² + 3.95A + 1.21, dL where L is measured in inches and A in years. Calculate - - (Round your answer to three decimal places.) dA A= 18 dL in/yr dA A= 18 Interpret your answer. A 18-year old rock fish shrinks at a rate of 5.624 in/yr. A 18-year old rock fish grows at a rate of 65.893 in/yr. A 18-year old rock fish shrinks at a rate of 65.893 in/yr. A 18-year old rock fish grows at a rate of 60.269 in/yr. OA 18-year old rock fish grows at a rate of 5.624 in/yr.

Intermediate Algebra
19th Edition
ISBN:9780998625720
Author:Lynn Marecek
Publisher:Lynn Marecek
Chapter9: Quadratic Equations And Functions
Section9.6: Graph Quadratic Functions Using Properties
Problem 9.104TI: A path of a toy rocket thrown upward from the ground at a rate of 208 ft/sec is modeled by the...
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Biologists have proposed a cubic polynomial to model the length L of Alaskan rockfish at age A:
L = 0.0155A3 - 0.372A? + 3.95A + 1.21,
dL
where L is measured in inches and A in years. Calculate
dA
(Round your answer to three decimal places.)
A = 18
dL
in/yr
dA TA = 18
Interpret your answer.
A 18-year old rock fish shrinks at a rate of 5.624 in/yr.
A 18-year old rock fish grows at a rate of 65.893 in/yr.
A 18-year old rock fish shrinks at a rate of 65.893 in/yr.
A 18-year old rock fish grows at a rate of 60.269 in/yr.
A 18-year old rock fish grows at a rate of 5.624 in/yr.
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Transcribed Image Text:Biologists have proposed a cubic polynomial to model the length L of Alaskan rockfish at age A: L = 0.0155A3 - 0.372A? + 3.95A + 1.21, dL where L is measured in inches and A in years. Calculate dA (Round your answer to three decimal places.) A = 18 dL in/yr dA TA = 18 Interpret your answer. A 18-year old rock fish shrinks at a rate of 5.624 in/yr. A 18-year old rock fish grows at a rate of 65.893 in/yr. A 18-year old rock fish shrinks at a rate of 65.893 in/yr. A 18-year old rock fish grows at a rate of 60.269 in/yr. A 18-year old rock fish grows at a rate of 5.624 in/yr. Need Help? Read It
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