At the bookstore, 40 copies of a popular paperback book fit perfectly on a 5-foot shelf. how many copies of this book would fit perfectly on an 8-foot shelf?

The number of copies of the popular paperback book fit in 8 foot shelf are 64 .

Step-by-step explanation:

As given

At the bookstore, 40 copies of a popular paperback book fit perfectly on a 5-foot shelf.

i.e

40 copies = 5 foot self

Now calculate number of paperback copies in 1 foot self.

Therefore the number of copies of the popular paperback book fit in 8 foot shelf are 64 .

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!