Simplify. Write your answers in the form of a+bi, where a and b are real numbers.
A. - 
- 
i
B. - 
+ 
i
C. - 
- 
i
D. 
+ 
i
Answer: A
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Express the number in decimal notation.8.1 × 105
A. 81,000 B. 8,100,000 C. 405 D. 810,000
Given that f(x) = sin x, g(x) = cos x, and h(x) = tan x, evaluate the given function. The point (x, 
), on the circle 
, also lies on the terminal side of an angle ? in standard position. The point 
, on the circle 
, also lies on the terminal side of an angle ? in quadrant IV. g(? + ?)
A. 
B. 
C. 
D. 
Solve the problem. Round to the nearest tenth.The roof of a building is in the shape of the hyperbola 
where x and y are in meters. Refer to the figure and determine the height, h, of the outside walls.A = 9 m
A. 85 m B. 9.2 m C. 368 m D. 19.2 m
Solve. Write the answer as a mixed number in simplest form.Ted walks around a lake on a path that is 5
miles long. It takes him 2
hours to complete his walk. What is his average speed (in miles per hour)?
A. 2
miles per hour
B. 2
miles per hour
C. 3
miles per hour
D. 2
miles per hour