For Most of Human History,the Average Life Expectancy at Birth

question 5

Multiple Choice

for most of human history,the average life expectancy at birth was:

• A) more than today
• B) less than 20 years
• C) between 20 and 30 years
• D) between 30 and 40 years
• E) more than 40 years but less than it is today

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Definitions:

Square Root

The value that, when multiplied by itself, gives the original number; it's represented by the radical symbol √.

Evaluate

To find out the value associated with an expression.

Round

To approximate a numerical value to a specified degree of accuracy, often to the nearest whole number or decimal place.

Simplify

Making an algebraic expression easier to understand by combining like terms or applying mathematical operations.