You are on a cycling trip around europe with friends. you are coming towards the end of your trip and have been asked by an online cycling blog to give some details about the cost of your trip, the places you visited and how many kilometres you have cycled. look at your kilometres cycled record for each week:

Based on the questions asked on the screen shot of the problem, the range of time spend cycling each week is 16 hours and the average number of calories burned per day in week 5 was 1200.  

Step-by-step explanation:

Given the data in the problem for the number of weeks versus the amount of hours spent cycling, in order to find the range you would subtract the highest number of hours in a given day (22 - week 4) by the lowest number of hours in a given day (6 - week 1), or 16.  For week 5, if you were to burn 8400 calories for the week, assuming that you cycled for all seven days, you would take your total calories burned and divide by the number of days to get approximately 1200 calories per day.  

step-by-step explanation:

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hj=3x+20

ji=15x-64

i am not sure :

step-by-step explanation: