Basic calculus questions! Full working please! 3. Suppose the police knew that t

Question

Basic calculus questions!

Full working please!

3. Suppose the police knew that there was a 2km section of roadworks where the speed limit was 30km/hr between the on-ramp and the highway patrol officer Furthermore, a police officer supervising the roadworks had observed the sus- picious car obeying the speed limit for the entirety of the roadworks. If the suspicious car reaches the highway patrol officer 20 minutes later at a speed of 100km/hr, as per Question 2, can the officer conclude that the driver exceeded the speed limit? (1 mark) 4. A runner completes a half marathon (13.1 miles) race in 84 minutes. If the runner begins at rest, and stops at the finish line, explain why the runner must have been running at exactly 9 miles per hour at least twice during the race. (1 marks

Explanation / Answer

3. So , the person did not exceeded the speed limit. Since he reaches the highway patrol after 20 minutes instead of 2 minutes

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