Answer:
1/3 (? is 3)
Explanation:
Plug in x values.
For -1, y = 3^-1
Using the rule that x^-a = 1/(x^a), we find that 3^-1 is 1/(3^1), which is 1/3
If x is 1, then y is 3; if x is 3, then y is 27
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