Whats 17+17 pleas help
(this is totally not for free points ahem)

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expressions 4s +9s represents the total number of items that will be displayed on s shelves. simplify this expression

Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression

Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.