Consider a person who invests in AAA-rated bonds, A-rated bonds, and B-rated bonds. The average yields are 6.5% on AAA bonds, 7% on A bonds, and 9% on B bonds. The person invests twice as much in B bonds as in A bonds. Let x, y and z represent the amounts invested in AAA, A, and B bonds, respectively.
Total Investment
Annual Return
$12,000
890
Use the inverse of the coefficient matrix of this system to find the amount invested in each type of bond.

A. $7,000 in AAA-rated bonds$2,000 in A-rated bonds$4,000 in B-rated bonds  
B. $5,000 in AAA-rated bonds$7,000 in A-rated bonds$3,000 in B-rated bonds
C. $5,000 in AAA-rated bonds$6,000 in A-rated bonds$4,000 in B-rated bonds  
D. $3,000 in AAA-rated bonds  $2,000 in A-rated bonds$6,000 in B-rated bonds
E. $6,000 in AAA-rated bonds$2,000 in A-rated bonds$4,000 in B-rated bonds  


Answer: E

Mathematics

You might also like to view...

Solve the problem.Find the inflection points (if any) on the graph of the function and the coordinates of the points on the graph where the function has a local maximum or local minimum value. Then graph the function in a region large enough to show all these points simultaneously. Add to your picture the graphs of the function's first and second derivatives.y = x3 - 15x2

What will be an ideal response?

Mathematics

Solve the problem.Let D be the smaller cap cut from a solid ball of radius 10 units by a plane 4 units from the center of the sphere. Set up the triple integral for the volume of D in spherical coordinates.

A.
B.
C.
D.

Mathematics

Write each expression using the LCD as the denominator.;  

A. ;    
B. ;    
C. ;    
D. ;    

Mathematics

Evaluate., when p = 27 and q = 3

A. 12 B. 96 C. 36 D. 72

Mathematics