maker of promissory note什么意思及同义词

求救啊，有谁会做啊？？？
Hernandez Engineering received a promissory note of $15,500 at 11% simple interest for 15 months from one of its customers. After 3 months, Union Bank discounted the note at a discount rate of 13%. Calculate the proceeds that Hernandez Engineering will receive from the discounted note.
Choose one answer.
a. $16,495.62
b. $12,456.22
c. $15,339.19
d. $18,855.17
Torrence borrowed $8,500 at 9% ordinary interest for 200 days. After 120 days, he made a partial payment of $4,000. What is the final amount due on the loan?
Choose one answer.
a. $4,486.67
b. $4,850.10
c. $4,711.11
d. $4,656.93
Todd signed a simple discount promissory note for $20,000. The discount rate is 8.5% using ordinary interest (360 days), and the term of the note is 90 days. What are Todd's proceeds on the loan?
Choose one answer.
a. $16,000
b. $19,200
c. $19,575
d. $19,600
Kit borrowed $15,500 at 11% ordinary (360 days) interest for 120 days. After 70 days, she made a partial payment of $3,000. What is the final amount due on the loan?
Choose one answer.
a. $12,943.06
b. $13,921.56
c. $13,027.57
d. $14,596.22
Devon takes out a loan of $1,500, at 6 1/2% simple interest, for 56 months. What is the maturity value of the loan? (Round to the nearest cent)
Choose one answer.
a. $1,955.00
b. $2,100.25
c. $2,500.5
d. $1,550.75

英语翻译
the maker of promissory note should be engaged in the payment according to its tenor,and is precluded from denying to a holder in due course the existence of the payee and his then capacity to endorse.
A banker's draft is a negotiable instrument drawn payable to order by a bank as drawer on the same bank as drawee,in another word,the drawer and drawee are the same person.It issued by a bank for fixed amount,always payable to bearer and on demand.Even though the draft may be drawn by a branch of head office or another branch,and the bank is considered as one entry for this purpose.It is also a legal tender.
It goes without saying that a banker's draft is as good as cash for many commercial purposes,dishonor of it being unheard of unless it is known that the presenter is not entitled to it