please answer these 3 questions

Robert Fischer is one of the owners of a firm which generated $18,000 in taxable income last year. Robert did not have to pay any personal tax on his share of the firm's income. Robert must be a partial owner of a: A) Non-dividend paying corporation. B) sole proprietorship. C) Limited liability company. OD) General partnership. E) Limited partnership. Omar has an investment valued at $12,345 today. He made a one-time investment at 6.5% four years ago. Leon has an investment that is also valued at $12,345 today. Leon invested four years ago at 7.5%. Omar originally invested and Leon invested A) $9,568.24; $9,199.16 B) $9,652.18; $9,389.00 C) $9,633.33; $9,304.06 D) $9,596.05; $9.243.94 E) $9,608.14: $9,267.67 Nadine invests $1,000 at 8% when she is 25 years old. Neal invests $1,000 at 8% when he is 40 years old. Both investments compound interest annually. Both Nadine and Neal retire at age 60. Which one of the following statements is correct? A) Nadine will have more money when she retires than Neal. B) Neal will earn more compound interest than Nadine. C) Neal will earn more interest on interest than Nadine. D) If Neal waits to age 70 to retire, then he will have just as much money as Nadine. E) Nadine will have less money when she retires than Neal