For a car moving at a constant speed, the distance traveled varies directly with the time spent driving. if such a car travels 165 miles in 3 hours, how many miles does it travel in 5 hours?

The car travels 165 miles in 3 hours. It is given that the distance traveled varies directly with the time spent driving (This is so because the car has constant speed). That is

. So we have , where a constant (probably speed). Dividing the equations,

The distance traveled in 5 hours is

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

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