(a) At a small clothing company, the estimated cost function for producing a new line of jeans is C(x)=(x^2-7x+30)/x, where is the number of pairs of jeans produced, in thousands. is measured in dollars.
i) Calculate the cost of a pair of jeans at a production level of 3000 pairs.
ii) Determine the rate at which the cost is changing at a production level of 3000 pairs of jeans using any method. Show all work.
I got approx. $0.99 for the first one, and 1 for the second. She won't help me or give me the solution and i have a test in 2 periods! D: HELP?