Write the equation of the tangent line to each curve at the indicated point. As a check, graph both the function and the tangent line. 
Definitions:
Working Distance
The distance between the objective lens of a microscope and the specimen being observed when in focus.
Total Magnification
The overall enlargement of an image, calculated by multiplying the magnification of the ocular lens by that of the objective lens.
Micrometers
Units of measurement equal to one millionth of a meter, commonly used in scientific and engineering contexts for precision.
Millimeters
A unit of length in the metric system equal to one-thousandth of a meter.
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