Express the sum using summation notation. Use a lower limit of summation, not necessarily 1, and k for the index of summation.(a + 1) + (a + b) + (a + b2) + . . . + (a + bn)
A. 
B. 
C. 
D. 
Answer: D
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Evaluate the integral by changing the order of integration in an appropriate way.
A. 
B. 
C. 
D. 
Solve the problem. Round to the nearest tenth unless indicated otherwise.The volume of wood in a tree varies jointly as the height of the tree and the square of the distance around the tree trunk. If the volume of wood is 
when the height is 
and the distance around the trunk is 
what is the volume of wood obtained from a tree that is 
tall
having a measurement of 
around the trunk?
A. 69.0 ft3
B. 64.0 ft3
C. 52.0 ft3
D. 60.0 ft3
In the right triangle shown, it follows that tan 45° = 1.
Answer the following statement true (T) or false (F)
A number of lines are concurrent if they have exactly one point in common.
Answer the following statement true (T) or false (F)