HELP ASAP DUE TODAY!

Write the sentence as an equation. b increased by 281 is d

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

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.