Show working out. The answer is 87km/h 12 The cost of running a car at an average speed of V km h¯ is given by c = 100 + -cents75per hour. Find the average speed (to the nearest km h¯') at which the cost of a 1000 kmtrip is a minimum.

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Answered: 12 The cost of running a car at an…

College Algebra

1st Edition

ISBN:9781938168383

Author:Jay Abramson

Publisher:Jay Abramson

Chapter3: Functions

Section3.2: Domain And Range

Problem 61SE: The cost in dollars of making x items is given by the function Cx)=10x+500. a. The fixed cost is...

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Similar questions

The cost in dollars of making x items is given by the function Cx)=10x+500. a. The fixed cost is determined when zero items are produced. Find the fixed cost for this item. b.What is the cost of making 25 items? c.Suppose the maximum cost allowed is SI500. What are the domain and range of the cost function, C(x) ?
A cylindrical orange juice container has metal bases of radius length 1 in. and a cardboard lateral surface 3 in. high. If the cost of the metal used is 0.5 per square inch and the cost of the cardboard is 0.2 cent per square inch, what is the approximate cost of constructing one container? Use 3.14.
Compute the following problems. Express the answers to 1 decimal place. Use: T=LFN Fifteen 3.20-millimeter diameter holes each 57.15 millimeters deep are drilled inan aluminum workpiece. The high-speed steel drill runs at 9200 r/min with a feedof 0.05 millimeter per revolution. Determine the total cutting time.
If a coffee filter is dropped, its velocity after t seconds is given by v(t)=4(10.0003t) feet per second. What is the terminal velocity, and how long does it take the filter to reach 99 of terminal velocity? Use a table increment of 0.1 and given your answer to the nearest tenth of a second.
When a certain drug is taken orally, the concentration of the drug in the patient's bloodstream After t minutes is given by C(t)=0.06t0.0002t2 where 0t240 and concentration is measured in mg/L .When is the maximum serum concentration reached, and what is that maximum concentration?
The kinetic energy E of an object varies jointly with the object’s mass m and the square of the object’s velocity v . An object with a mass of 50 kilograms traveling at 16 meters per second has a kinetic energy of 6400 joules. What is the kinetic energy of an object with a mass of 70 kilograms traveling at 20 meters per second?

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12 The cost of running a car at an average speed of V km h is given by c = 100 + cents 75 per hour. Find the average speed (to the nearest km h) at which the cost of a 1000 km trip is a minimum.