Here are the answers to the math expressions and definitions provided:
1. **Math expression that contains one or more variables**: **Algebraic expression**
2. **This number appears beneath the exponent when written in exponential form**: **Base**
3. **A number that multiplies a variable**: **Coefficient**
4. **A value in a formula that does not change (unlike a variable)**: **Constant**
5. **The rule that if a, b, and c are numbers or expressions, then a • (b + c) = a • b + a • c**: **Distributive Property**
6. **A small raised number that tells you how many times to multiply the base number by itself**: **Exponent**
7. **An expression that involves an exponent. The expression may contain variables, which may be the base or the exponent**: **Exponential expression**
8. **Terms in an algebraic expression that have the same variables raised to the same powers**: **Like terms**
9. **The order in which math operations should be performed to solve a problem**: **Order of Operations**
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