please help with questions thank you

A commercial cow-calf operation maintains a 200-cow base herd on grazing 1,200 acres. The baseline level of production in a cow herd has been 89% calf crop weaned with 490 lb average weaning weight. Assume calf price of $150/cwt. In the past, this operation has annually spent $500 per cow exposed. . Assume that each bull in this herd is exposed to 25 cows per year, and is used for 4 years, and then replaced. This operation has spent $3,400 per bull in the past (this bull cost is included in annual cow expenses of $500/cow exposed). How much of the annual cow cost ($500/cow exposed) is due to the bull cost per cow exposed? Assume that this operation could purchase different bulls for $4,750 with the resulting annual percent calf crop weaned going to 90% and average calf weaning weight going to 515 lb (with all other expenses staying the same). . Based on the above scenario, what is the income per cow exposed? Based on the above scenario, what is the net return per cow exposed? Based on the above scenario, what is the income per acre? . . Show the income per cow exposed for this new scenario Assume that the new ($4,750 bulls) are exposed to 25 cows per year and are replaced after 4 years. How much would the annual cost per cow exposed increase over the previous amount of $500? What is the net return per cow exposed under this new bull scenario? Instead of selling weaned heifers (at 475 lb for $142/cwt), this operation believes it could sell these females as yearling breeding heifers (12 months old) for $1,100 per head; however, it would cost $185 per heifer to develop them from weaned calves. . What is the value per heifer at weaning? What is the net change in value for selling yearling breeding heifers