3)
a) f is linear on each segment so this is easy to graph.
b) g(3) is just the integral of a linear function, hopefully he will know how to do this. my answer is 9. bit confused about how to find g'(-12) since iirc g' = f but f is only defined between -2 and 9 so we don't know what f(-12) is, maybe someone else has some input.
c) this is g'(2) = f(2)
d) g' = f is positive on [-2,4] so g is increasing on this interval, and thus the minimum is g(-2).
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