Conan o'brien hosts the conan show and andy richter, his sidekick, writes for it. conan needs 4 hours to host a good show. it takes andy 10 hours to do the same. conan writes one usable joke in an hour, but andy needs 2 hours to do the same. if they both were given 10 hours, andy's opportunity cost of writing a single usable joke is: a. 0.2 unit of hosting. b. 0.25 unit of hosting. c. 0.5 unit of hosting. d. 1 unit of hosting.

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below. trans typ./ check no. date description of transaction payment/ debit deposit/ credit (+) balance 1,200 00 324 10/6 miller's food market 45.87 45 87 groceries 1,154 13 325 10/7 cyber center computer outlet 218.59 218 59 monitor 935 54 326 10/9 sandy's beauty salon 30.00 30 00 haircut and styling 900 59 deposit 10/10 paycheck 621.33 621 33 1,621 92 evaluate leslie's check register. a. leslie did a good job. everything is correct. b. the final balance is wrong; she did not add everything correctly. c. leslie should have written debit instead of deposit for the transaction type. d. leslie switched the debit and credit columns.