A car dealer will sell you the car you want for $18,144, which is just $150 over the dealer's invoice price (the price the dealer pays the manufacturer for the car). You tell him that you will think about it. The dealer is anxious to meet his monthly quota of sales, so he calls the next day to offer you the car for $17,994 if you agree to buy it tomorrow, October 31. You decide to accept the deal.

a. What is the decay factor associated with the decrease in the price to you? Write your answer in decimal form to the nearest thousandth.