Question 9 …….zzzzzzz
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There is one critical point at (2, 4), but this point happens to fall on one of the boundaries of the region. We'll get to that point in a moment.
Along the boundary , we have
which attains a maximum value of
Along , we have
which attains a maximum of
Along , we have
which attains a maximum of
So over the given region, the absolute maximum of is 1578 at (2, 44).
Given that Jessica is a custodian at Oracle Arena.
She waxes 20 square meters space of the floor in 5/3 of an hour. Jessica waxes the floor at a constant rate means rate will remain fixed for any hour.
Now we have to find about how many square meters can she wax per hour.
To find that we just need to divide 20 squaer meters by 5/3 hours
=12
Hence final answer is 12 square meters can she wax per hour.
Which can also be written as per hour.