If “a” represents a number on the real number line and the result of “a + b” is located to the left of a then which of the following must be true about the value of “b”?

(1) b is positive
(2) b is negative
(3) b is zero
(4) b is less than a

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Which equation represents the function on the graph?

Derek purchased a new gym membership. it costs him seven dollars a month plus two dollars for every time that he visits the gym. he wants to spend less than 25 dollars a month to visit the gym. write an inequality that models the situation using the variable v for the number of visits per month. also find the maximum number of visits he can make to the gym and still keep his cost below 25 dollars a month.