The record for the boston marathon's wheelchair division is 1 gr8, 18 min, and 27 seconds. the boston marathon is 26.2 miles long . what was the average speed of the record winner of the wheelchair division?
at this rate, about how long would it take this competitor to complete a 30-mile race

Write two subtraction equations that are equivalent to 5 + 12 = 17.

Mexico city, mexico, is the world's second largest metropolis and is also one of its fastest-growing cities with a projected growth rate of 3.2% per year. its population in 1991 was 20,899,000 people. use the formula p = 20.899e0.032t to predict its population p in millions with t equal to the number of years after 1991. what is the predicted population to the nearest thousand of mexico city for the year 2010?

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin. how many doctors use brand x aspirin