Final answer:
To simplify the expression 3^-2 * 3^7 as a single power of 3, add the exponents together. The simplified expression is 3^5, which equals 243.
Step-by-step explanation:
To simplify the expression 3-2 * 37 as a single power of 3, we can add the exponents together since the base (3) is the same. Therefore, 3-2 * 37 can be written as 3(-2+7) = 35.
The final simplified expression is 35, which is equivalent to 243.