Mathematics, 09.11.2020 04:20 swaggernas
The minimum cost of maintaining an overhead crane depends on the number of hours the crane is in operation. The cost is given by the relation C=6t^2 - 36t +154, where C represents the cost in hundreds of dollars and t represents the time in hours that the crane has been operated.
a) What is the minimum cost of maintaining the crane?
b) Find the number of hours the crane operates for this minimum maintenance cost.
c) Find the cost if the crane sits idle.
Answers: 1
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Jonathan pays $1.90 per pound for potatoes. he buys 8.3 pounds of potatoes. he determines that he will pay $15.77, before tax, for the potatoes. which best describes the reasonableness of jonathan’s solution? jonathan’s answer is reasonable because there are two decimal places in the factors and two in the product. jonathan’s answer is unreasonable because there are three decimal places in the factors and two in the product. jonathan’s answer is reasonable because is 16, and 16 is close to 15.77. jonathan’s answer is unreasonable because is 8, and 8 is not very close to 15.77.
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The minimum cost of maintaining an overhead crane depends on the number of hours the crane is in ope...
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