Function: g(x) = 2x2 – 8 for x ≥ 0, the inverse function is f(x)= √ 1 2 x + 4 for x ≤ 0, the inverse function is d(x)= – √ 1 2 x + 4 graph q = r = s = t =

In july, the average temperature in one us city was 29°c. by december, the average temperature had fallen by 29°c. explain why the average temperature in december was 0°c.