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- ?Lv 71 month ago
a) the rate of change is how much it changes after one unit. So when n changes from 0 to 1 (or 1 to 2, etc), C changes by how much? IOW, C(1) - C(0) = ?
b) if n = 0 then C(n) = ?
So, what are your tentative answers?
Hopefully no one will spoil you the answer. that would be very irresponsible of them.