To the nearest tenth, what is the area of a sector with a radius of 8 centimeters and a central angle of 45°?
O 100.5 cm
O 4.5 cm?
O 25.1 cm?
O 50.3 cm

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.