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The average life expectancy in Canada is \(80.1\) years. Estimate the country's life expectancy in hours.

The average life expectancy in Mozambique is \(40.3\) years. Estimate the country's life expectancy in hours.

Ten people ordered calculators. The least expensive was \(\$ 19.95\) and the most expensive was \(\$ 39.95\). Half ordered a \(\$ 29.95\) calculator. Select the best estimate of the amount spent on calculators. a. \(\$ 240\) b. \(\$ 310\) c. \(\$ 345\) d. \(\$ 355\)

Traveling at an average rate of between 60 and 70 miles per hour for 3 to 4 hours, select the best estimate for the distance traveled. a. 90 miles b. 190 miles c. 225 miles d. 275 miles

Traveling at an average rate of between 40 and 50 miles per hour for 3 to 4 hours, select the best estimate for the distance traveled. a. 120 miles b. 160 miles c. 195 miles d. 210 miles

If a test has four true/false questions, in how many ways can there be three answers that are false and one answer that is true?

Imagine that you counted 60 numbers per minute and continued to count nonstop until you reached 10,000 . Determine a reasonable estimate of the number of hours it would take you to complete the counting.

Imagine that you counted 60 numbers per minute and continued to count nonstop until you reached one million. Determine a reasonable estimate of the number of days it would take you to complete the counting.

There are five people in a room. Each person shakes the hand of every other person exactly once. How many handshakes are exchanged?

Five runners, Andy, Beth, Caleb, Darnell, and Ella, are in a one-mile race. Andy finished the race 7 seconds before Caleb. Caleb finished the race 2 seconds before Beth. Beth finished the race 6 seconds after Darnell. Ella finished the race 8 seconds after Darnell. In which order did the runners finish the race?