Pls show explaination. Credit for work

NetWorth, a company that sells broadband solutions, spends $400,000 in 2013 and this decreased by $25,000 each year thereafter till 2019, Assuming an interest rate of 10% per year, determine the equivalent annual worth of the cost through the year 2019. Click the answer you think is right. $325,000.00 $1,628,289.53 $250,000 $334,459.62 Do you know the answer? Read about this I know it Think so Unsure No idea