The function f gives the number of copies a book has sold w weeks after it was published. The equation f(w) = 500 * 2^w defines
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Answer:
9 Km/h
Step-by-step explanation:
Walking 3 Km for 20 minutes from the definition of speed, it's distance covered per unit time. Here, the distance covered is expressed per unit hour.
Substituting 3.5 Km for distance and time for 20 minutes
To convert time into hours, we divide the minutes by 60 hence time=20/60=1/3 hours
Therefore, the speed is 9 Km/h
For this case we have the following system of equations:
Substituting the second equation into the first we have:
The equality is not fulfilled, therefore the system has no solution.
The lines do not intersect.
Answer:
The system has no solution.