What’s a swimmer's favorite kind of math? Dive-ision!

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How can we find the measure of an exterior angle if we know the measurement of an interior angle

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)