If x is an integer, is 9^x + 9^{-x} = b I. 3^x + 3^{-x} = \sqrt{b + 2} II. x > 0

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A question isfollowed bydataintheform of two statements labelled as I and II. You must decide whether the data given in the Statements are sufficient to answerthe questions.

Question 4

If x is an integer, is $$9^x + 9^{-x} = b$$
I. $$3^x + 3^{-x} = \sqrt{b + 2}$$
II. $$x > 0$$

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If x is an integer, is $$9^x + 9^{-x} = b$$I. $$3^x + 3^{-x} = \sqrt{b + 2}$$II. $$x > 0$$

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If x is an integer, is $$9^x + 9^{-x} = b$$
I. $$3^x + 3^{-x} = \sqrt{b + 2}$$
II. $$x > 0$$