Sketch the graph and find the area of the region bounded below by the graph of the given function and above by the x-axis from 
to 
.
?
?
?
A. ?
sq units
?
B. ?
sq units
?
C. ?
sq units
?
D. ?
sq units
?
Answer: B
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Find the extreme values of the function subject to the given constraint.
A. Maximum: 8 at 
minimum: -31 at 
B. Maximum: 8 at 
minimum: -4 at 
C. Maximum: 4 at 
minimum: -31 at 
D. Maximum: 4 at 
minimum: -4 at 
Add or subtract as indicated.Add:8x2 -xy -y2
A. 8x2 + 12xy + 12y2 B. 9x2 + 13xy + 13y2 C. 7x2 - 13xy - 13y2 D. 9x2 + 11xy + 11y2
Solve the problem.Mardi received an inheritance of $60,000. She invested part at 4% and deposited the remainder in tax-free bonds at 6%. Her total annual income from the investments was $2800. Find the amount invested at 4%.
A. $39,000 B. $20,000 C. $57,200 D. $40,000
Solve the system.
A. x = 2, y = -7, z = -1 B. x = 2, y = -7, z = 1 C. x = 2, y = 7, z = 1 D. x = 2, y = 7, z = -1