Distribute or not? suppose you need to compute z = (a + b)(x + y), where a and b are m × n matrices and x and y are n-vectors. (a) what is the approximate flop count if you evaluate z as expressed, i. e., by adding a and b, adding x and y, and then carrying out the matrix-vector multiplication? (b) what is the approximate flop count if you evaluate z as z = ax + ay + bx + by, i. e., with four matrix-vector multiplies and three vector additions? (c) which method requires fewer flops? your answer can depend on m and n. remark. when comparing two computation methods, we usually do not consider a factor of 2 or 3 in flop counts to be significant, but in this exercise you can.

Which of the following pairs is most similar to each other? a. barter goods and fiat money b. digital money and barter goods c. fiat money and digital money d. commodity money and digital money

In the fall, jay thompson decided to live in a university dormitory. he signed a dorm contract under which he was obligated to pay the room rent for the full college year. one clause stated that if he moved out during the year, he could sell his dorm contract to another student who would move into the dormitory as his replacement. the dorm cost was $5000 for the two semesters, which jay had already paid a month after he moved into the dorm, he decided he would prefer to live in an apartment. that week, after some searching for a replacement to fulfill his dorm contract, jay had two offers. one student offered to move in immediately and to pay jay $300 per month for the eight remaining months of the school year. a second student offered to move in the second semester and pay $2500 to jay. jay estimates his food cost per month is $500 if he lives in the dorm and $450 if he lives in an apartment with three other students. his share of the apartment rent and utilities will be $404 per month. assume each semester is 4.5 months long. disregard the small differences in the timing of the disbursements or receipts. what is the cost of the cheapest alternative?

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