I need q 4 and 5 please:)

Acompany recorded a check in its accounting records as $87. however, the check was actually written for $78 and it cleared the bank as $78. what adjustment is needed to the personal statement? a. decrease by $9 b. increase by $9 c. decrease by $18 d. increase by $9

At the end of the current year, accounts receivable has a balance of $550,000; allowance for doubtful accounts has a credit balance of $5,500; and sales for the year total $2,500,000. an analysis of receivables estimates uncollectible receivables as $25,000. determine the net realizable value of accounts receivable after adjustment. (hint: determine the amount of the adjusting entry for bad debt expense and the adjusted balance of allowance of doubtful accounts.)

Lillypad toys is a manufacturer of educational toys for children. six months ago, the company's research and development division came up with an idea for a unique touchscreen device that can be used to introduce children to a number of foreign languages. three months ago, the company produced a working prototype, and last month the company successfully launched its new device on the commercial market. what should lillypad's managers prepare for next? a. increased competition from imitators b. a prolonged period of uncontested success c. a sharp decline in demand for the product d. a difficult struggle to move from invention to innovation