Will you please help me answer this question! Time is limited, so there is no reason to show all of your work! I just need the answer to each step clearly stated please.

_ 430 1 For a companyI that manufactures tennis rackets, the average cost per racket is found to be 0 = T +3 + :Kfor x 21, where x is the number of rackets produced per hour. Use the differential to approximate the change in average cost per racket if production is {A} increased from 1') per hour to 1? per hour and (3) increased from 30 per hour to 3? per hour. {A} If production is increased from 10 per hour to 1? per hour the average cost per racket will V by approximately 5|: per racket. {B} If production is increased from 30 per hour to 3? per hour the average cost per racket will V by approximately 5|: per racket