Find the sum of 1/3 + 2/3 + 3/3 + ...12/3

Complete the statements about the system of linear equation respresented by the tables the equation respented the left table is

Compare the cost of the bike trips from the two companies shown.for both the cost in a linear function of the number of days which statements is true

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