After 4 years aspen earned $510 in simple interest from a cd into which she initially deposited $3000. what was the annual interest rate if the cd
a) 13%
b) 11.75%
c) 4.25%
d) 8.5%

Little’s law firm has just one lawyer. customers arrive randomly at an average rate of 6 per 8 hour workday. service times have a mean of 50 minutes and a standard deviation of 20 minutes. how long does a customer spend at little’s law firm on average?

Diane owes $387 to her brother. if she debits her bank account $161.25 a month to pay him back, how many months will it take her to pay off the debt?

Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read?