Your college newspaper, the collegiate investigator, sells for 90¢ per copy. the cost of producing x copies of an edition is given by c(x) = 30 + 0.10x + 0.001x2 dollars. (a) calculate the marginal profit function, in dollars per copy.

Tiana daniels enterprise’s trial balance as at december 31, 2016 did not balance. on february 15, 2017 the following errors were detected: errorsi. water rates had been undercast by $2, 000.  ii. a cheque paid to yvonne walch of $2, 680 had been posted to the credit side of her account.  iii. discount received total of $1, 260 had been posted to the debit side of the discount allowed account as $1, 620.  iv. rent paid in the amount of $24, 000 had been posted to the credit of the rent received account.  v. wayne returned goods valuing $1, 680 to daniels enterprise but had been completely omitted from the books.    required: 1. prepare the journal entries to correct the errors.  (narrations required)                    14.5 marks  2.    prepare the suspense account showing clearly the original trial balance error.          8 marks