How many asymmetric carbon atoms are present in the molecule shown?

According to our textbook authors Gass & Seiter in chapter 1, persuasion is best thought of as:

After establishing a press in Italy, Arnold Pannartz and Konrad Swenhym designed a typographic “double alphabet” based on a combination of which two alphabets.

Chinese block printing, knowns as “Chinese chop,” pre-dates Gutenberg’s development of movable type. 

  Express the following number in scientific notation:  0.000000000051

The average life expectancy for today’s average American man is 75.4 years.  In 1970, it was 67.2.  Find the increase in the average life expectancy for men over the last few decades.

EXTRA CREDIT Perform the indicated computation.  If possible, reduce to lowest terms.

Find the following product.  (4)(-7)

  Perform the indicated computation.  Write the answer in decimal notation. 

Express the given repeating decimal as a quotient of integers.  If possible, reduce to lowest   terms.