A person invests 3000 dollars in a bank. The bank pays 5% interest compounded semi-annually.

I’m stuck on this equation, anyone got the answer?

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?