Please solve these questions. Help me out

1) Caroline needs to put some money in her pocket this winter, so she plans on removing snow from driveways. She will need to pay $560 for a snow-blower to make her job easier. A variable cost of $3 per job for supplies would also be required, She estimates that she could clean 40 driveways a month. What price should she charge the customers for the service in order to make a profit of $1200? 2) What is the list price of an article that is subject to discounts of 23.25%, 11,2%, 4% if the net price is $664.88? 3) The Snow Store received an invoice for $6710.00 dated July 13, terms 5/10, 2/30, n/90, for a shipment of skis. The Ski Shop made two partial payments. a) How much was paid July 20 to reduce the unpaid balance to $4000.00? b) How much was paid on August 11 to reduce the outstanding balance by $1700.00? 4) A merchant buys an item listed at $69.00 less 34% from a distributor. Overhead is 44% of cost and profit is 37.5% of cost. For how much should the item be retailed? 5) An item that cost the dealer $2331.00 less 14%, 12.25% carries a price tag at a markup of 70% based on cost. For quick sale the item was reduced 30%. What was the sale price? 6) Compute the amount of interest for $679.43 at 6.25% from May 11 to January 20. 7) What rate of interest is required for $940.48 to earn $42.49 interest from September 30, 2013, to March 4, 2014? 8) A 4-month, 7:26% percent promissory note dated June 10, 2013 has a maturity value of $6231.34. What is the face value of the note? 9) A 7-month note dated May 1, 2014 is made at 3,75% for $3705. What is the present value the note on September 4, 2014, if money is worth 6.87%? E