A-googol is the number 1 followed by 100 zeros. a) Write a googol in scientific notation. b) A nanometer is 1 x 10 meters. How many times larger is a 1 googol meters than a nanometer? c) There are about 2.5 x 1010 red blood cells in the average adult. How many adults would it take to have 1 googol red blood cells?

In 2010, the U.S. population was 309.9 million and there were 128,900,000 American Facebook accounts. Approximately one-third of all Facebook accounts are owned by someone under the age of 25. How many Facebook users in 2010 were under 25? Write your answer in scientific notation, with the mantissa rounded to 1 decimal place.

The length of one edge of a cube is 228 pm. What is the volume of the cube in cubic centimeters? Report your answer using scientific notation (e.g., 1.23e15 or 1.23e-15) to the hundredths place and do not include units.

b.   Find the next number: 1/2, 1/4, 1/8, 1/16

Find the dimensions of the rectangular dog park producing the greatest enclosed area given 260 feet of fencing. The dimensions of each pen will be feet by feet Enter an integer or decimal number [more..]

The diameter of a large virus is 3.0⋅10-7 meters. Write this number in standard notation.