Simplify powers having what bases.

Step-by-step explanation:

to simplify a power of a power, you multiply the exponents, keeping the base the same. For example, (2power cube )power 5 =2power 15.

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the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

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