question 1:in how many days will $3100 grow to $3195.72 at 5.75%

question 2:what is the amount to which $1550 will grow from june 10,2018,to december 15,2018,at 6.5%?

question 3:what is the present value of $3780 due in nine months if interest is 5%?

question 4:an obligation of $10,000 is to be repaid by equal payments due in 90 days and 180 days ,what is the amount of the equal payments if money is worth 6.5% and the focal date is today