Arailroad tunnel is shaped like a semi ellipse, as shown below. the height of the tunnel at the center is 27 ft, and the vertical clearance must be 9 ft at a point 24 ft from the center. find an equation for the ellipse.

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 .