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, as needed, to find the coordinates of the new location of the point 
when it is rotated 15° counterclockwise about the origin.
A. 
B. 
C. 
D. 
Answer: B
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Use the two steps for solving a linear programming problem to solve the problem.Bruce is bringing items to sell at a flea market, where he plans to sell televisions at 
each and DVD players at 
each. Due to space limitations he can only store at most 150 items for the day. However, because more people already own televisions, Bruce knows that the number of DVD sales must at least match the number of television sales. How many of each item should Bruce bring to the flea market to maximize his sales?
A. 25 televisions and 125 DVD B. 100 televisions and 50 DVD C. 75 televisions and 75 DVD players D. 50 televisions and 100 DVD players
Add.+ 
A. 115.135 B. 116.135 C. 116.035 D. 115.035
Find numbers a and b, or k, so that f is continuous at every point.
A. k = 64
B. k = 
C. k = 8
D. impossible
Multiply and simplify.
? 
A. 
B. 
C. - 
D. - 