Question 15 (0.15 points) Two years ago, selected automobiles had an average cost of $16000. The average cost of the same automobiles now is $17000. What was the annual rate of increase in the average price of these automobiles? (Reminder: Enter your answer as a decimal, not as a percentage.) Your Answer: Answer Question 16 (0.15 points) What is the annual cost of a checking account with a monthly fee of $1.50 and a processing fee of $0.25 per check if you write an average of 4 checks per month? Your Answer: Answer Question 17 (0.15 points) A family spends $53000 in a year for living expenses. If prices increase 3% per year for the next 4 years, what amount will the family need for their living expenses for a year after 4 years? Your