Solve the problem.When sitting atop a tree and looking down at his pal Joey, the angle of depression of Mack's line of sight is 
If Joey is known to be standing 40 feet from the base of the tree, how tall is the tree (to the nearest foot)?
A. 32 ft
B. 28 ft
C. 26 ft
D. 30 ft
Answer: C
Mathematics
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Solve the problem by integration.An electrical insulating ring for a machine part can be described as the volume generated by revolving the area bounded by 
and 
about the the y-axis. Find the volume (in cm3) of material in the ring.
A. 54 cm3 B. 52 cm3 C. 10 cm3 D. 11 cm3
Mathematics
Find the perimeter. Use 3.14 for ? when needed.
A. 20.56 cm B. 6.28 cm C. 12.56 cm D. 16.56 cm
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics
Determine whether the given function is one-to-one. If it is one-to-one, find its inverse.f(x) = 2x - 1
A. f-1(x) = 
B. f-1(x) = 
C. Not one-to-one
D. f-1(x) = 
+ 1
Mathematics