Multivariable calculus question:
find an equation of the straight line tangent, at the given point, to the level curve of the given function passing through that point.
f(x, y) = at (2, -1)
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How many terms does the polynomial x^2 y^2 have

If the segment op is dilated by a scale factor r=2, what is the length of segment op? a)10cm b)16cm c)6cm d)4cm

In the next 10 month, colin wants to save $900 for his vacation. he plans to save $75 each of the first 8 months. how much must he save each of the last 2 months in order to meet his goal if he saves the same amount each month ?