Write the ratio for the given quantities. Make sure they are expressed in the same units and in simplest form. An example is given. Will give brainliest for full answer

Which graph corresponds to the function f(x) = x2 + 4x – 1?

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

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