Find all solutions to the equation in the interval [0, 2?).sin 2x = -sin x
A. 0, 
, ?, 
B. 
, 
, 
, 
C. No solution
D. 
, 
Answer: A
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Solve the equation.
+ 
= 
A. {-4} B. {-1} C. {4} D. {1}
Solve the problem.A right triangle has an area of 10 square inches. The square of the hypotenuse is 104. Find the lengths of the legs of the triangle. Round your answer to the nearest inch.
A. 4 inches and 5 inches B. 4 inches and 100 inches C. 2 inches and 10 inches D. 1 inches and 20 inches
Solve and check.On a clear day, the distance d (in miles) that a lookout on a ship can see to the horizon from height h (in feet) can be approximated by the formula 
How high must a lookout climb to see a ship 16.5 miles away? Round to the nearest foot.
A. 326 ft B. 138 ft C. 189 ft D. 272 ft
Solve the exponential equation and approximate the result, correct to three decimal places.4x = 21
A. 2.196 B. 5.250 C. 0.455 D. 1.658