SOLUTION: Suppose a car travels at a constant rate of 70 kph for 2 hours and travels 55 kph thereafter. Shoe the distance travelled is a function of time and find the rule of this two-piece

Question 1199864: Suppose a car travels at a constant rate of 70 kph for 2 hours and travels 55 kph thereafter. Shoe the distance travelled is a function of time and find the rule of this two-piece function.
Answer by ikleyn(52776) (Show Source): You can put this solution on YOUR website!
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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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           70*t,  if  t <= 2
D(t) = 

           140 + 55*t,  if t > 2.

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