Solve the problem.A section of roller coaster track has the dimensions shown in the diagram. Find the grade of the track, written as a percent. 
A. 40%
B. 9.6%
C. 45%
D. 3%
Answer: A
Mathematics
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Solve the problem.Find the volume that remains after a hole of radius 1 is bored through the center of a solid sphere of radius 3. Round to the nearest tenth.
A. 30.2 B. 284.3 C. 94.8 D. 23.7
Mathematics
Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = tan
A. y = tan u; u = ? - 
; 
= sec2
B. y = tan u; u = ? - 
; 
= 
sec2
C. y = tan u; u = ? - 
; 
= 
sec
tan
D. y = tan u; u = ? - 
; 
= sec2
Mathematics
Find the determinant.
A. 12 B. -12 C. -30 D. 0
Mathematics
Use the properties of limits to help decide whether each limit exits. If a limit exists, find its value.
Let f(x) = 
. Find
f(x).
A. 4 B. 0 C. 2 D. Does not exist
Mathematics