Which expression correctly factors the polynomial?
9x2 - 49
a. (3x – 7)?
b. (3x – 7)(3x + 7)
c. (9x + 7)(x - 7)
d. (9x - 7)(x + 7)

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 .