Which number is in the solution set of the inequality x < 15?

Given the graph below state whether or not the relation is a function, and give the domain and range.

Leo has b boxes of pencils. each box contains 6 pencils. he has a total of 42 pencils. the equation that represents this situation the value of b that makes the equation true the first one is b+6=42,6b=42,b=42+6,or 42b=6 the second one are 7,836 48

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