Please answer all of these questions. i posted them previously and i didnt get a completed answer and also got them wrong. can you please help me i only have one chance to get them right. thank you!

How many years will it take Rexchem, Inc., to accumulate $800,000 for a chemical feeder, if the company deposits $50,000 each year, starting one year from now, into an account that earns interest at 15% per year? (Round up your answer to an integer value.) Rexchem, Inc., will take 8.76 years Bart is a junior in college. He plans to invest equal, annual amounts starting 6 years from now for 4 consecutive years in order to accumulate a total of $44,000 at the end of 15 years. If the funds earn 8% per year, what is the required amount of each deposit? The required amount of each deposit is $ Find the present worth of cash flows of $1000 that start now (time 0) and continue through year 13. provided the interest rate is 14% per year. The present worth is $ 182 How much money was deposited each year for 8 years if it now amounts to $204,000 and the last deposit was made 10 years ago? Assume the account earned interest at 7% per year. The money deposited each year is $ Sierra Electric Company is considering the purchase of a hillside ranch for possible use as a wind energy farm sometime in the future. The owner of the 475-acre ranch will sell for $4,000 per acre if the company will pay her in two payments-one payment now and another that is twice as large 3 years from now. If the transaction interest rate is 8% per year, what is the amount of the first payment? The amount of the first payment is $