Did your instructor give you permission to seek outside help on this exam?

The expressions highlighted in red are not correct. In some cases, maybe you were thinking one thing, but typed something else? The other cases are wrong.

The expression in blue can be simplified.

**You can test** these candidates for x, by substituting them into the original

equation. Evaluate, to see whether either of them yields a true statement.

Also, the notation log(x) means log base-10, so it's not necessary to type the base, in your expressions.

Also also, the symbols x and X are not interchangeable (they represent different things). Pick one symbol, and use it consistently throughout.

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