Solve and graph the inequality. Give answer in interval notation.2x + 1 ? 3x - 7
A. (-?, 8]
B. [-8, ?)
C. (-?, 2]
D. (2, ?)
Answer: A
Mathematics
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Find the exact value of the real number y.y = arccos 
A. 
B. 
C. 
D. - 
Mathematics
Simplify the rational expression.
A. 7x - 1
B. 
C. 7x2 - 30
D. 
Mathematics
Write the sum or difference as a product containing only sines and/or cosines.cos(6?) - cos(2?)
A. -2 sin(4?) sin(2?) B. -2 cos(4?) sin(2?) C. 2 cos(4?) cos(2?) D. 2 cos(2?)
Mathematics
Consider the series
?
.
?
Determine whether the geometric series converges or diverges.
?
If it converges, find its sum.
What will be an ideal response?
Mathematics