math
posted by Jessy .
In a factory of electronic items, the total cost of production, expressed in thousands of dollars, is given by the function C(x)= (x^2x+2)/x+1
where x belongs to [0;5] and expressed in hundrends of items produced.
1) calculate in dollars the total cost of production of 400 electronic items.
deduce that the average cost of one electronic item is $7.
2) calculate the minimum total cost.
3) Each item is sold for $58.Express the income from selling all the quantity produced as a function of x.
4)determine the profit achieved upon selling all the quantity of x and denote it by p(x).

please I desperately need an answer!!
Respond to this Question
Similar Questions

math
the cost per hour of running an assembly line in a manufacturing plant is a function of the number of items produced per hour. The cost function is C(x) = 0.28x^2  0.7x + 1 where C(x) is the cost per hour in thousands of dollars and … 
math
At a production level of 1400 items, the total cost is $7250 and the marginal cost is $25. Use this information to estimate the costs of producing the following number of items. Your answers should be whole numbers. a) 1401 items . … 
Math  average rate problems(check + help)
The total cost, c, in dollars of operating a factory that produces kitchen utensils is C(x)=0.5x^2+40x+8000, where x is the number of items produced in thousands. a)Determine the marginal cost of producing 5000itmes and compare this … 
Business Calculus
A company has operating costs of $2000 per thousand items produced. Its revenue function can be modeled by the equation: R(x)=30x/(x+2)² , where x is measured in thousands of items produced, and C and R are measured in thousands of … 
prealgebra
jack brought 3 items that cost 25 dollars each, and five items that cost 40 dollars each. what was the total cost, including 5% sales tax? 
Business calc
A total revenue function is given by R(x) = 1000(x^2  0.1x)^1/2 , where R(x) is the total revenue, in thousands of dollars, from the sale of x items. Find the rate at which total revenue is changing when 20 items have been sold. 
Math
Can anyone help me with this? The marginal cost for items in dollars is given by C''(x) = 2x + 30. If the cost of producing 2 items is $220, determine the cost function. What is the cost function? 
Survey of Calculus
A total revenue function is given by R(x) = 1000(x^2  0.1x)^1/2 , where R(x) is the total revenue, in thousands of dollars, from the sale of x items. Find the rate at which total revenue is changing when 20 items have been sold. So … 
Calculus
A company manufactures x units of one item and y units of another. The total cost in dollars, C, of producing these two items is approximated by the function C=7x^2+xy+1y^2+600. A) If the production quota for the total number of items … 
MATH
The cost to manufacture a product is proportional to the quantity produced, with a cost of $270000 dollars per day when 900 items are produced. The cost to store n items is proportional to the square of n, with a daily storage cost …