I dont understand 4, 5, and 6 please answer it

4. Don buys $50 worth of raffle tickets for his church fundraiser. He knows the odds of winning the prize (50 hours of tapes of the pastor's sermons) are pretty low, but he is happy to help the church out with his $50 purchase. TRUE or FALSE: Since his intent was essentially to transfer $50 to the church, he can claim a $50 charitable donation.

5. Paula, a single high-school teacher, rents out the upstairs apartment in her two-family house and incurs a $12,000 loss. Her AGI is $128,000. She has no passive income. How much of her rental loss can she deduct on her tax return under the passive loss limitation rules?

a. Zero.

b. $4,000

c. $11,000

d. $12,000

6. Alex is single and has no dependents. He is self-employed and his gross income is $150,000. He pays $10,000 for medical insurance for himself. He also incurs $40,000 in doctor bills during the year that are not covered by his insurance. And he donates $12,000 to charity. (Pretend there are no other deductions -- no QBI deduction and no deduction for self-employment taxes.) Taking into account the 10%-of-AGI floor that applies to itemized medical expenses, what is Alex's taxable income?

a. $88,000

b. $102,000

c. $103,000

d. $137,600