What is the direct variation equation if y varies directly with x and y = –18 when x = 3?

a. y=-1/6x

b. y = –3x

c. y = –6x

d. y = –15x

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.