Preparing Entries Across Two Periods Hatcher Company closes its accounts on December 31 each year. On December 31, 2018, Hatcher accrued $600 of interest income that was earned on an investment but not yet received or recorded (the investment will pay interest of $900 cash on January 31, 2019). On January 31, 2019, the company received the $900 cash as interest on the investment. Prepare journal entries to: a. Accrue the interest earned on December 31, 2018; b. Close the Interest Income account on December 31, 2018 (the account has a year-end balance of $2,400 after adjustments); and c. Record the cash receipt of interest on January 31, 2019.

Wo firms, a and b, each currently dump 50 tons of chemicals into the local river. the government has decided to reduce the pollution and from now on will require a pollution permit for each ton of pollution dumped into the river. it costs firm a $100 for each ton of pollution that it eliminates before it reaches the river, and it costs firm b $50 for each ton of pollution that it eliminates before it reaches the river. the government gives each firm 20 pollution permits. government officials are not sure whether to allow the firms to buy or sell the pollution permits to each other. what is the total cost of reducing pollution if firms are not allowed to buy and sell pollution permits from each other? what is the total cost of reducing pollution if the firms are allowed to buy and sell permits from each other? a. $3,000; $1,500 b. $4,500; $3,500 c. $4,500; $4,000 d. $4,500; $2,500