Suppose you want to have $600,000 for retirement in 30 years. Your account earns 8% interest. How much would you need to deposit in the account each month? You have $5,000 on a credit card that charges a 13% interest rate. If you want to pay off the credit card in 4 years, how much will you need to pay each month (assuming you don't charge anything new to the card)?

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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im stuck on the annuities and loans section of math I'm currently on these questions I have a video that helps you and provides the formula but I am still getting it wrong I am not sure if its the calculations I put in the calculator or what 

Suppose you want to have $600,000 for retirement in 30 years. Your account earns 8% interest. How much would you need to deposit in the account each month?

You have $5,000 on a credit card that charges a 13% interest rate. If you want to pay off the credit card in 4 years, how much will you need to pay each month (assuming you don't charge anything new to the card)?

You want to buy a $231,000 home. You plan to pay 15% as a down payment, and take out a 30 year loan for the rest.

a) How much is the loan amount going to be?

$Correct

b) What will your monthly payments be if the interest rate is 6%?

$wrong 

c) What will your monthly payments be if the interest rate is 7%?

$wrong

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