F(x) = 6x + 1 f(x) = 6x f(x) = 6(x + 1) f(x) = 6x − 1 Pairs the total pages a person reads in x days, if the person reads 6 pages a day arrowBoth the cost of x boxes of mangoes, if 1 box costs $6 and the shipping charge is $6 per order (for any number of boxes) arrowBoth the total cost of x notebooks, if one notebook costs $6 and students receive a discount of $1 off their total bill arrowBoth the total cost of x novels and a pocket dictionary if you buy x novels each at $6 and get a pocket dictionary at $1