Solve the problem.The height h of a ball thrown is given by 
, where x is the horizontal distance traveled and both measurements are in feet. At what horizontal distances will the height of the ball be more than 
(Round distances to the nearest tenth of a foot, if necessary.)
A. The height of the ball will be more than 9 ft at horizontal distances less than 19.1 ft.
B. The height of the ball will be more than 9 ft at horizontal distances less than 5.9 ft or between, but not including 19.1 ft and 25 ft.
C. The height of the ball will be more than 9 ft at horizontal distances between, but not including, 5.9 ft and 19.1 ft.
D. The height of the ball will be more than 9 ft at horizontal distances between, but not including, 5.9 ft and 25 ft.
Answer: C
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Answer the question.A crate of oranges contains at least 40 oranges and at most 55 oranges. How many crates of oranges must be selected to be sure that at least two crates contain the same number of oranges?
A. 18 crates B. 15 crates C. 16 crates D. 17 crates
Simplify and add or subtract wherever possible.
- 3
- 7
A. 62
B. 57
C. -108
D. -62
Solve the problem.A plane takes off from an airport on the bearing S29°W. It continues for 20 minutes then changes to bearing 
and flies for 2 hours 20 minutes on this course then lands at a second airport. If the plane' s speed is 420 mph, how far from the first airport is the second airport? Round your answer correct to the nearest mile.
A. 1010 mi B. 1011 mi C. 1111 mi D. 1110 mi
Write(cos² x)(1 + tan² x) in terms of sin x and cos x then simplify.
(a) 1 (b) sin² x (c) sin x (d) cos x (e) -cos² x