Hello, please give explanation and answer for the wrong ones and show calculations step by step. thank you :)

Fruits \& Veggies, a nonprofit, conducts two types of programs: education and research. It does not use fund accounting. During the fiscal year, the following transactions and events took place. Prepare journal entries for these transactions, identifying increases and decreases by net asset classification as appropriate. 1. Pledges amounting to amount pledged. $180,000 were received, to be used for any purpose designated by the trustees. Fruits \& Veggies normally collects 90 percent of the amount pledged. 2. Fruits \& Veggies collected $171,000 in cash on the amount pledged in the previous transaction. It wrote off the balance as uncollectible