Graph the function.y = cos x
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Graph.36x2 + 12y2 = 192
A. 
B. 
C. 
D. 
Mathematics
Solve.It took Sara's mother 6 hours round trip to drive to the University and bring Sara back home for spring break. If the University is 144 miles from home, find her mother's average speed.
A. 24 mph
B. 48 mph
C. 55
mph
D. 49 mph
Mathematics
Write the equation of the line using the information given about its graph.Rate of change 9, y = - 
when x = 0
A. y = - 
x - 9
B. y = - 
x + 9
C. y = 9x - 
D. y = 9x + 
Mathematics
Solve the problem.Use the formula P = 4s to find the perimeter of a square with side length 21 centimeters.
A. 84 B. 42 C. 63 D. 89
Mathematics