The time (in minutes) that it takes a mechanic to change oil has an exponential distribution with mean 20.(a) find p(x < 25), p(x> 15), and p( 15 < x < 25)
(b) find the 40th percentile.

a. -0.3 > -0.33

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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