Homework Answers
SOLUTION :
P(x) = 3.14 x^2 - 23.88 x + 173.86 (thousand dollars)
where,
P = price of a house in thousand dollars
x = years since 2006.
So,
Rate of change of price per year since 2006
= dP/ dx
= 3.14 * 2 x - 23.88 (thousand dollars per year since 2006)
So, model of rate of change of price is :
P’ (x) = 6.28 x - 23.88
where,
P’(x) = rate of change of price per year since 2006
x = years since 2006 .
(ANSWER).
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