Solve.A cyclist bikes at a constant speed for 21 miles. He then returns home at the same speed but takes a different route. His return trip takes one hour longer and is 26 miles. Find his speed.
A. 5 mph
B. 7 mph
C. 6 mph
D. 4 mph
Answer: A
Mathematics
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Calculate the work done by the force F along the path C.F = xe6x2i + e6yj + e7zk ; the path is C1 ? C2 where C1 is the straight line from (0, 0, 0) to 
and C2 is the straight line from (1, 1, 0) to (1, 1, 1)
A. W = 
+ 
+ 
B. W = 
+ 
C. W = 
+ 
+ 
D. W = 
+ 
+ 
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Answer the following statement true (T) or false (F)
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Find the specified domain.Find the domain of (f + g)(x) when f(x) = 3x + 9 and g(x) = 
A. (-?, 8) ? (8, ?) B. (-?, -8) ? (-8, ?) C. (-?, -2) ? (-2, ?) D. (-?, ?)
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Graph the function.f(x) = x(x + 1)(x - 2)(x + 3)
A. 
B. 
C. 
D. 
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