Use Cramer's rule to solve the system or to determine that the system is inconsistent or contains dependent equations.
A. {(20, 3)}
B. {(16, 18)}
C. inconsistent; no solution or ?
D. dependent equations; infinitely many solutions
Answer: C
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Use spherical coordinates to find the volume of the indicated region.the region enclosed by the cone 
between the planes 
and 
A. 
B. 
?
C. 
?
D. 
Solve the problem.Suppose you purchase a 30-year U.S. savings bond with an APR of 4.5%. The face value of the bond is $12,000. Find the purchase price of the bond.
A. $5454.55 B. $5155.75 C. $5106.38 D. $5057.96 E. $4800
Solve the problem.The volume of a solid is 5x(7x- 9). The volume of a smaller solid is 7(7x- 9). Find an expression, in factored form, for the difference of the volumes of the two solids.
A. (7x - 7)(5x + 9) B. (7x - 9)(5x + 7) C. (7x - 9)(5x - 7) D. 5x(7x2 - 9x - 7)
Solve the absolute value equation.
= 16
A. {66, -94} B. {-66} C. {94} D. {94, -66}