**The mean of 3^(m+2) and 3^(m+4) can be expressed as b•3^(m+3). If m>0, then b=?**

Ans: 5/3

On an actual College Board test, this would likely be multiple choice and perhaps a bit easier but s similar question appeared on the October 2008 exam.

*Would you recommend to your students 'plugging in' say m=1?*

*Even if students avoid an algebraic approach, we as educators can still use this example to review exponent skills, yes?*

*Sent from my Verizon Wireless 4GLTE Phone*

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