1. The processor speed, in megahertz of Intel processors could be approximated by the following function of time t in years since the start of 1995. 75t + 200 ,0 ≤t≤ 4, 600t 1900,4 < t ≤9. f(t)= Sketch the graph of f and use your graph to estimate when processor speed first reached 2.0 gigahertz (1 gigahertz = 1000 megahertz).

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