Find the angle between u and v in radians.u = 7j - 5k, v = 3i - 9j - 2k
A. 2.26
B. -0.69
C. 1.89
D. 1.58
Answer: A
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Solve the problem.The height of an object dropped from a tall building is given by the table, where t is the elapsed time in seconds and h is the height in feet.
If the height is modeled by h(t) = h0- 16t2, find h0.
A. 375 ft B. 1500 ft C. 1125 ft D. 750 ft
Classify the system as either consistent or inconsistent.
A. Inconsistent B. Consistent
Solve the problem.Bubba's Computer World sells personal computers. To advertise its computers to target groups, they advertise with x one-minute spots on local television at a cost of $240 per minute, and y one-minute spots on radio, at a cost of $200 per minute. Research shows that they sell one computer for every 3 minutes of television advertising, and one computer for every 6 minutes of radio advertising. Suppose the company has at most $50,000 to spend on advertising and that they sell at least 50 computers per month from this advertising. Graph the possible combination of television and radio spots and find the vertices. 
A. 
B. 
C. 
D. 
Prove the identity.
?
What will be an ideal response?