Find the angle between u and v in radians.u = -5i - 7j, v = 9i + 10j + 5k
A. 1.99
B. 2.77
C. -1.20
D. 1.58
Answer: B
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Graph the linear equation.-2y = x - 2
A. 
B. 
C. 
D. 
Give the quadrant in which the point is located.(11, 19)
A. Quadrant I B. Quadrant II C. Quadrant IV D. Quadrant III
Translate the sentence into a mathematical equation. Be sure to identify the meaning of all symbols.The profit derived from the sale of x video cameras is $310 per unit less the sum of $2100 costs plus $170 per unit.
A. If P is profit and x the units sold, then P = 310x - (2100 + 170x) or 
B. If P is profit and x the units sold, then P = 
- 
or 
C. If P is profit and x the units sold, then P = 310x - (2100 - 170x) or 
D. If P is profit and x the units sold, then P = 310x + 2100 - 170x or 
Solve the problem.A drug is injected into a patient and the concentration of the drug is monitored. The drug's concentration, 
in milligrams after t hours is modeled by 
Estimate the drug's concentration after 5 hours. (Round to the nearest hundredth.)
A. 1.39 mg B. 0.44 mg C. 1.51 mg D. 0.32 mg