Need two students described a part of earth's middle layer. bob: the deepest part joe: the semi-fluid part which part of the middle layer did bob and joe describe? they both described the mesosphere. they both described the asthenosphere. bob described the mesosphere and joe described the asthenosphere. bob described the asthenosphere and joe described the mesosphere.

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.

have a nice day!