Continental Congress. Franklin returned to Philadelphia in 1775. There he served as a delegate to the Continental Congress, where he was instrumental in drafting the Declaration of Independence and the Articles of Confederation to form a new union.
In its simplest form (when r is an integer), the negative binomial distribution models the number of failures x before a specified number of successes is reached in a series of independent, identical trials. Its parameters are the probability of success in a single trial, p, and the number of successes, r. A special case of the negative binomial distribution, when r = 1, is the geometric distribution, which models the number of failures before the first success. More generally, r can take on non-integer values.
Positive and Negative. If a problem consists of a positive number being divided by a negative number, the answer will always result in a negative number. For example, if a problem reads 10 divided by -5, the answer is -2. Follow normal division rules, as if both numbers were positive, and add a negative sign to the quotient for problems like this.