Find the exact value of y, or state that y is undefined.y = cos-1 
A. 
B. - 
C. 
D. 
Answer: D
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Perform the indicated operations, expressing the answer in simplest form with rationalized denominators.
A. 
B. 
C. 
D. 
Provide an appropriate response. When an airplane leaves the runway, its angle of climb is 22° and its speed is 235 feet per second. Find the plane's altitude after 1 minute.
A. 5,282 ft B. 627.3 ft C. 88.0 ft D. 5,696.8 ft
Provide an appropriate response.The series of sketches below starts with an equilateral triangle having sides of length 1 (one). In the following steps, equilateral triangles are constructed by joining the midpoints of the sides of the preceding triangle. Develop a formula for the area of the nth new triangle. Use math induction to prove your answer.
What will be an ideal response?
Plot the set of numbers on a number line.
A. 
B. 
C. 
D. 