Write the vector in terms of the unit vectors i and j.v = 
A. 3 + 8j
B. 3i + 8
C. 3i + 8j
D. (3 + i) + 8j
Answer: C
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Find the probability of the event.A lottery game contains 21 balls numbered 1 through 21. What is the probability of choosing a ball numbered 22?
A. 
B. 21
C. 0
D. 1
Shade the part of the whole that is represented by the given fraction.
A. 
B. 
C. 
D. 
Solve the problem.A drug company establishes that the most effective dose of a new drug relates to body weight as shown below. Let body weight be the independent variable and drug dosage be the dependent variable. Use a graphing utility to draw a scatter diagram and to find the line of best fit. What is the most effective dosage for a person weighing 120 lbs? 
A. 13.38 mg B. 10.07 mg C. 12 mg D. 26.39 mg
Provide an appropriate response.If m = 0, the graph of y = mx + b ? .
A. is somewhat flat B. is a horizontal line C. does not represent a function D. is a vertical line