concentration of a drug t hours after being injected is given by C(t)= 0.3t / t2 +68 Find the time the concentration is ata maximun. Give your answer accurate to at least 2 decimal places. b) A farmer wishes to enclose a rectangular field. Three of sides will be visible from the street. so be will use a nice looking fence for those sides, costing $100 per foot. Howevwe, the north side is only visible to a farmer, so there he will use brushes costing $40 per foot. he wants to spend $8400 for the materials, what are the dimensions of the field that yield the largest area?

concentration of a drug t hours after being injected is given by C(t)= 0.3t / t2 +68 Find the time the concentration is ata maximun. Give your answer accurate to at least 2 decimal places. b) A farmer wishes to enclose a rectangular field. Three of sides will be visible from the street. so be will use a nice looking fence for those sides, costing $100 per foot. Howevwe, the north side is only visible to a farmer, so there he will use brushes costing $40 per foot. he wants to spend $8400 for the materials, what are the dimensions of the field that yield the largest area?

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter7: Analytic Trigonometry

Section7.6: The Inverse Trigonometric Functions

Problem 92E

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Question

10. Optimization Problems

a) The concentration of a drug t hours after being injected is given by

C(t)= 0.3t / t² +68

Find the time the concentration is ata maximun. Give your answer accurate to at least 2 decimal places.

b) A farmer wishes to enclose a rectangular field. Three of sides will be visible from the street. so be will use a nice looking fence for those sides, costing $100 per foot. Howevwe, the north side is only visible to a farmer, so there he will use brushes costing $40 per foot. he wants to spend $8400 for the materials, what are the dimensions of the field that yield the largest area?

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