15. If you will be asked to choose from -2, 2, 3, and 4, what values for a and n will you consider so that y = ax^n could define the graph below?
A. a = 2 , n = 3
B.a = 3 , n = 2
C. a = 2 , n = 4
D. a = 3 , n = 3
16. the following could be the graph of y=x⁴ -5x²+ 4?
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