Use Cramer's Rule to solve (if possible) the system of equations.
?
?
?
A. (0, 2, -4)
B. (0, -2, 4)
C. (0, -2, -4)
D. (0, 2, 0)
E. (0, 2, 4)
Answer: A
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Find the mass of the wire that lies along the curve r and has density ?.r(t) = (7 cos t)i + (7 sin t)j + 7tk, 0 ? t ? 2?; ? = 2
A. 196?
units
B. 28?
units
C. 4? units
D. 14?
units
Express the integrand as a sum of partial fractions and evaluate the integral.
A. 
- 6x + 9 ln
- 
+ C
B. 
- 6x - 27 ln
+ 
+ C
C. 
- 6x + 27 ln
+ 
+ C
D. 27 ln
+ 
- 
+ C
Use the bar graph to answer the question.The following graph shows the average starting salary for graduates of five different schools with a degree in mathematics. 
What was the greatest average starting salary among the five schools?
A. $48,069 B. $45,917 C. $51,748 D. $35,686
Solve the equation in the real number system.2x3 - x2 + 2x - 1 = 0
A. 
B. 
C. 
D. 