Solve the problem.The matrix 
rotates a point 45° clockwise about the origin, and the matrix 
rotates a point 30° counterclockwise about the origin. Use these matrices to find the coordinates of the new location of the point 
when it is rotated 15° clockwise about the origin.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Find 
.y = cos-1
A. - 
B. 
C. 
D. 
Mathematics
Solve the problem.A survey of 1445 people found that 557 people were planning to travel on Labor Day weekend. How many people were planning to stay home?
A. 888 people B. 788 people C. 1902 people D. 2002 people
Mathematics
Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for an to find a20, the 20th term of the sequence.3, 12, 21, 30, 39, . . .
A. an = 9n - 2; a20 = 178 B. an = 6n - 2; a20 = 118 C. an = 9n - 6; a20 = 174 D. an = 6n - 9; a20 = 111
Mathematics
Perform the indicated operation(s). Simplify if possible.
+ 
A. 
B. 
C. 
D. 
Mathematics