Solve the problem using the quadratic formula.The cumulative number (in thousands) of deaths from a certain disease from 2000 to 2010 may be modeled by 
where x = 0 corresponds to 2000, x = 1 to 2001, etc. Use the formula for f(x) to estimate symbolically the year when the total number of deaths reached 150 thousand.
A. 2007
B. 2009
C. 2010
D. 2008
Answer: A
Mathematics
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Write the number in ordinary notation.2 × 104
A. 20,000 B. 2000 C. 200,000 D. 2,000,000
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Solve the given equation for x.y = 8 cos 3x
A. x = 
cos-1 
B. x = 
cos-1 
C. x = 8 cos-1 
D. x = 3 cos-1 
Mathematics
Evaluate. Assume that all variables represent positive numbers. |4.1|
A. 0 B. 4.1 C. 8.2 D. -4.1
Mathematics
Solve the problem.A musician plans to perform 5 selections for a concert. If he can choose from 7 different selections, how many ways can he arrange his program?
A. 35 B. 21 C. 16,807 D. 2520
Mathematics