Use the midpoint formula to make the requested estimation.The life expectancy for a person living in a certain country born in 1990 was 78.9 years and the life expectancy of a person born in 2012 was 84.3 years. Estimate the life expectancy of a person living in this country born in 2001.
A. 81.6 yr
B. 82.95 yr
C. 83.6 yr
D. 80.25 yr
Answer: A
Mathematics
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Mathematics
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A. 720 B. 6 C. 1 D. 46,656
Mathematics
Choose the correct response.What is the speed of a plane that travels at a rate of 567 mph into a wind of r mph?
A. 567 + r mph
B. 
mph
C. 567 - r mph
D. r - 567 mph
Mathematics
Solve the problem.Find the exponential function that models the data in the table below.
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Mathematics