What causes a solution to a rational equation to be an extraneous solution?
a. when there is more than one solution, one of the solutions is extraneous.
b. if a solution results in zero when substituted into the denominator of the equation, the solution is extraneous.
c. if a solution results in a negative number when substituted into the denominator of the equation, the solution is extraneous.
d. when a solution is a fraction, the solution is extraneous.

Identify the statement below as either descriptive or inferential statistics. upper a certain website sold an average of 117 books per day last week. is the statement an example of descriptive or inferential statistics? a. it is an example of descriptive statistics because it uses a sample to make a claim about a population. b. it is an example of inferential statistics because it uses a sample to make a claim about a population. c. it is an example of inferential statistics because it summarizes the information in a sample. d. it is an example of descriptive statistics because it summarizes the information in a sample.