I need help with this please help a man out

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1

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.