Solve the problem.A twenty-five foot ladder just reaches the top of a house and forms an angle of 41.5° with the wall of the house. How tall is the house? Round your answer to the nearest 0.1 foot.
A. 18.6 ft
B. 18.8 ft
C. 19 ft
D. 18.7 ft
Answer: D
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Use a calculator to give the real number value. Round the answer to 7 decimal places.y = cos-1(-0.3907)
A. 2.0079383 B. -1.1698423 C. 1.9721882 D. 1.9206367
Solve the problem.The following bar graph shows the ranking of the top items sold at a local sporting event and the percent of fans selecting each item. 
What was the second-most selected item?
A. Hot dog/corn dog B. Candy C. Popcorn D. Beverages
Use the graph to find the requested value.Find x when f(x) = -2.
A. 2
B. 3
C. 0
D. 
Solve.While traveling in a car, the centrifugal force a passenger experiences as the car drives in a circle varies jointly as the mass of the passenger and the square of the speed of the car. If the a passenger experiences a force of 162 newtons when the car is moving at a speed of 60 kilometers per hour and the passenger has a mass of 50 kilograms, find the force a passenger experiences when the car is moving at 70 kilometers per hour and the passenger has a mass of 100 kilograms.
A. 539 newtons B. 490 newtons C. 441 newtons D. 392 newtons