Question: Develop an estimate for each of the following situations. (a) The cost of a 500-mile automobile trip, if gasoline is $1 per gallon, vehicle wear

Develop an estimate for each of the following situations.

(a) The cost of a 500-mile automobile trip, if gasoline is $1 per gallon, vehicle wear and tear is $0.08 per mile, and our vehicle gets 20 miles per gallon.

(b) The total number of hours in the average human life, if the average life is 75 years.

(c) The number of days it takes to travel around the equator using a hot air balloon, if the balloon averages 100 miles per day, the diameter of the earth is ""4000 miles.

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