A plane travels 1400 miles to Munich and back. The trip there was with the wind. It took 14 hours. The trip back was into the wind. The trip back took 28 hours. Find the speed of the plane in still air and the speed of the wind?

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

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