Finance Homework---HELP!!!!!

1.A car dealer will sell you the $16,450 car of your dreams for $3,240 down and payments of $339.96 per month for 48 months. What is the total amount paid for both car and financing? (Round your answer to the nearest cent.) ______

2. Convert the following credit card rate to the APR. Oregon, 1 3/4% per month _____

3. Find the amount of interest and the monthly payment for the loan. Purchase a living room set for $3,600 at 12% add-on interest for 3 years. (Round your monthly payment to the nearest cent.)
________ interest
________ per month

Well for the first part you need to multiply the monthly payment by the number of months you will be paying it for and then add it to the down payment.

For the second part im not quite sure as im doing maths and that sounds more like a finance question.

And for the final part you should divide the price for the living room set by how long you have to pay it, then add the interest.

Business Finance Help w/ Math problem

Constant growth valuation. Harrison Clothiers' stock currently sells for $20 a share. It just paid a divident of $1.00 a share (that is, Do=$1.00). The divident is expected to grow at a constant rate of 6 percent. What stock price is expected 1 year from now? What is the rquired rate of return?