If im reading a book 351 pages so far i read 4/9 of the book how many pages i have left to read

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

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.