91Ó°ÊÓ

On average, the human heart beats 70 times in 1 minute. How many beats is this in a year? (Use 365 days in a year.) If the average male in the United States lives to be 75 years old, estimate the number of heartbeats in an average male's lifetime.

Round each number so that there is only one nonzero digit. $$281,506$$

Round each number so that there is only one nonzero digit. $$8723$$

If a license plate consists of three capital letters and a three-digit number, how many license plates are possible? How many are possible in the entire United States if each state uses the same system of three letters and a three- digit number?

A certain computer chip processes 5 -digit binary numbers, meaning that each of the five places could contain a 1 or \(0 .\) How many different binary numbers can it process? If each letter, \(A-Z\), and each numeral, \(0-9,\) corresponds to a different binary number, would the 5 -digit chip be able to recognize them all? Explain.

You want to tile the kitchen floor in your home. The rectangular kitchen is 16 feet long by 12 feet wide. If you used 1 foot by 1 foot square tiles, how many would you need?