Find the open interval(s) where the function is changing as requested.Decreasing; f(x) = - 
A. (3, ?)
B. (-?, 3)
C. (-3, ?)
D. (-?, -3)
Answer: C
Mathematics
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Graph.81x2 + 9y2 = 729
A. 
B. 
C. 
D. 
Mathematics
Find the area of the SSS triangle ABC. If necessary, round the answer to two decimal places.a = 6, b = 6, c = 7
A. 15.54 B. 18.25 C. 21.14 D. 17.06
Mathematics
Evaluate using the correct order of operation.
+
2- 
A. 3
B. 5
C. 3
D. 2
Mathematics
Find the mode or modes for the list of numbers.Number of orders of pizza each evening: 73, 25, 73, 13, 25, 29, 56, 73
A. 45.9 orders B. 73 orders C. 25 orders D. 42.5 orders
Mathematics