( Please and thankyou) Which expression is equivalent to (2x^2 + 6x -3) + (x^2 - 2x -7)

Which of the following expressions are equivalent ?

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)

Select the correct answer from each drop-down menu. the table shows the annual sales revenue for different types of automobiles from three automobile manufacturers. sales revenue (millions of dollars) suv sedan truck marginal total b & b motors 22 15 9 46 pluto cars 25 27 10 62 panther motors 26 34 12 72 marginal total 73 76 31 180 the company with the highest percentage of sales revenue from sedans is . of the annual sales revenue from suvs, the relative frequency of pluto cars is .