The range of a quadratic function is (−∞, a], where a is any real number. Which of the following statements must be true? The quadratic function is concave up with a negative leading coefficient.

The quadratic function is concave up with a positive leading coefficient.

The quadratic function is concave down with a positive leading coefficient.

The quadratic function is concave down with a negative leading coefficient.

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 .