The hardcover version of a book weighs 7 oz and it's paperback version weigh a total of 249oz

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.

Asequence is a function whose is the set of natural numbers