Having issues with these problems can't figure them out please help!!!

1#: If the interest rate is 7.5%, then what is the present value of $4,000 to be received in 6 years?

A $2,420.68

B $2,591.85

C $2,996.33

D $3,040.63

2#: You put $75 in the bank one year ago and forgot about it. The bank sends you a notice that you now have $81 in your account. What interest rate did you earn?

A 5%

B 6%

C 7%

D 8%

The table below shows information from YAHOO! FINANCE on several stocks traded in the United States. Using market capitalization weights, what is the current stock index price for all the 4 stocks listed in the table? Securitv Symbol GICS Sector Price Market Ca 106.43 91.37 $61.41 licker EXPE HSY STT BA $16.03B Consumer Discretionary $19.78B Consumer Staples Financials Industrials reet 24.57B $86.62B eing $130.75 O A $97.49 O B$105.75 O C$110.55 O D $111.21