Evaluate.
A. 5x2 - 4x
B. -5x2 - 4x
C. -5x2 + 4x
D. 5x2 + 4x
Answer: C
Mathematics
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Express the integrand as a sum of partial fractions and evaluate the integral.
dx
A. ln 
- 
+ C
B. ln 
- 
+ 
+ C
C. ln 
+ 
+ C
D. ln 
- 
+ 
+ C
Mathematics
Solve the problem.Evaluate 
at (x, y, z) = (5, 4, 3) for the function u(p, q, r) = p2q2 - r; p = y - z, 
A. -56 B. 144 C. -224 D. -112
Mathematics
Provide an appropriate response.Find the measure of ?1 if ?8 = 138°.
A. 90° B. 42° C. 100° D. 138°
Mathematics
Use the given information to answer the question.The number N, in millions of Americans of age x with arthritis, is estimated with the following graph. 
What approximate age (closest integer) has the most arthritic Americans?
A. 60 B. 65 C. 21 D. 88
Mathematics