Question 1199854
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Suppose a car travels at a constant rate of 70 kph for 2 hours and travels 55 kph thereafter. 
Show the distance traveled as a function of time and find the rule of this two-piece function. 
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<pre>

           70*t,  if  t <= 2
D(t) = 

           140 + 55*t,  if t > 2.
</pre>