Find the open interval(s) where the function is changing as requested.Decreasing; y = x2/5 + x7/5
A. 
B. 
C. (-?, 0), 
D. 
, (0, ?)
Answer: B
Mathematics
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Use a proportion to solve the problem.On a map, the length of a nature-center trail is 9.2 centimeters. If the scale is 2 centimeters to 21 kilometers, what is the actual length of the trail?
A. 96.6 km B. 100.6 km C. 193.2 km D. 97.6 km
Mathematics
The graph of a function is given. Determine whether the function is increasing, decreasing, or constant on the given interval.(-8, -2.5) 
A. constant B. increasing C. decreasing
Mathematics
Add.
A. 10,540 B. 11,550 C. 11,440 D. 10,450
Mathematics
Simplify using the zero-power rule.70
A. 0 B. -1 C. 1 D. 7
Mathematics