Simplify the expression.
A. sin x
B. cot x
C. sec x
D. cos x
Answer: D
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Solve the differential equation subject to the initial conditions.t
+ 4y = t3; t > 0, y = 1 when t = 2
A. y = 
+ 
t-4, t > 0
B. y = 
+ 
t-4, t > 0
C. y = 
- 
t-4, t > 0
D. y = 
- 2t-4, t > 0
Solve the problem.Find the point on the line of intersection of the planes 
and 
that is closest to the origin.
A. 
B. 
C. 
D. 
The circle graph shows the results of the student council presidential election. The complete circular area represents 100% of the votes.
The circle graph shows what percent of the vote each person received.Who got the most votes?
A. Ben B. Ming C. Ted D. Matt
Solve the system of equations.7x1 + 7x2 + x3 = 1 x1 + 8x2 + 8x3 = 89x1 + x2 + 9x3 = 9
A. (0, 1, 0) B. (0, 0, 1) C. (1, -1, 1) D. (-1, 1, 1)