Over 18.5 days, a pool's water level changed by an average of −0.43 centimeter each day. What was the total change in the water level? Enter your answer as a decimal in the box.

Juanita wade's new car has an msrp of $28,902.11 including title and processing fees. the premier package which includes surround sound and dvd player costs three times the amount of the in-style package which includes leather seats and select wheels. the total cost of her new car was $34,290.08 which included the 6.5% sales tax. find the cost of the premier package to the nearest cent.