Please help me out I will give brainliest to the first correct answer

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

Which best describes the function on the graph? direct variation; k = −2 direct variation; k = -1/2 inverse variation; k = −2 inverse variation; k = -1/2