The tree in the illustration casts a shadow 
feet long while a person 
feet tall casts a shadow 
feet long. Find the height of the tree.
?
?
A.
B.
C.
D.
E.
Answer: C
Mathematics
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Use the shell method to find the volume of the solid generated by revolving the region bounded by the given curves and lines about the x-axis.y = 7x2, y = 7
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Find the present value of the given annuity. Round to the nearest cent.Payments of $490 made annually for 13 years at 6% compounded annually
A. $4337.81 B. $4554.55 C. $4108.06 D. $4336.26
Mathematics
Give the center and radius of the circle. Then sketch its graph.(x + 5)2 + (y - 4)2 = 16
A. center (- 5, - 4), r = 4
B. center (5, - 4), r = 4
C. center (5, 4), r = 4
D. center (- 5, 4), r = 4
Mathematics
Solve the equation.(-5x - 5)2 = -10(-5x - 5) - 16
A. 
B. 
C. {-2,-8}
D. 
Mathematics