A radio tower is secured t the ground by a 421-ft cable. If the angle of elevation is 30°, how tall is the tower? Round to the nearest hundredth.

What is the point-slope equation of a line with slope -5 that contains the point (6,3)

The graph of a hyperbola is shown. what are the coordinates of a vertex of the hyperbola? (0, −4) (−3, 0) (0, 0) (0, 5)

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.