Use Cramer's rule to solve the linear system.
A. x = -1, y = 8
B. x = 8, y = 1
C. x = 1, y = 8
D. x = -8, y = -1
Answer: B
Mathematics
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Solve the problem.Betina Gregory owns municipal bonds valued at $5300, which is 9% of her total investments. What is the value of her total investments? Round to the nearest dollar.
A. $47,700 B. $589 C. $58,889 D. $477
Mathematics
Shade the portion of the diagram that represents the given set.(A ? B) ? 
A. 
B. 
Mathematics
Subtract and simplify.
- 
A. 
B. 11
C. 0
D. 
Mathematics
Complete the table for the radioactive isotope.
Isotope
Half-life(years)
Initial Quantity
Amount after 1000 years
24,100
---- 
A. Initial Quantity: 
B. Initial Quantity: 
C. Initial Quantity: 
D. Initial Quantity: 
E. Initial Quantity: 
Mathematics