Answer:
Complete solution is given in the images attached below for better demonstration
75,000 x 5 = 5 x 75,000
just multiply 75,000 by five, since there are 75,000 people who visit oer day, and the teacher is looking for people to visit in a five day period. Then just change the order, and voila!
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Divide both side by
and rearrange terms to get a linear ODE;

Multiply both sides by
:

The left side can be condensed as the derivative of a product:

Integrate both sides, then solve for
:

To find the answer, multiply the decimal by 10. 0.05 X 10 = 0.5, and since 0.05 goes into 0.5 10 times, it is equivalent to 1/10th of 0.5.
To do this, you have to solve the length, width, and height and then round the answer to the nearest hundredth. Since it says round to the nearest HUNDRETH then I'm guessing that you have to get the LxWxH as a hundredth value.