Simplify the expression. Assume that all variables are positive when they appear.
- 4
+ 2
A. -2
B. -2
C. -7
D. -7
Answer: D
Mathematics
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Evaluate the polynomial for the given values of x and y.3y2 - 7xy; x = 6 and y = -2
A. 192 B. 90 C. 190 D. 96
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Evaluate the integral by making a substitution and then using a table of integrals.
A. ln 
+ cos t + C
B. ln 
- sin t + C
C. ln 
+ sin t + C
D. ln 
- sin t + C
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Graph the parabola whose equation is given.f(x) = x2 - 1
A. 
B. 
C. 
D. 
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Solve the problem.How many ways can a committee of 5 be selected from a club with 10 members?
A. 100,000 B. 252 C. 50 D. 30,240
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