Choose the word or phrase that best completes each sentence. Merchants developed
v to track spending and sales.
Mathematicians created
so that calculations could be understood.
People began to use a v to show an unknown number in an equation.

Question 4 which of the following is an example of libel? a. an anti-war supporter advocates overthrow of the government. b. a writer for the washington post maliciously prints false information about a lawyer c. a politician screams obscenities at a reporter on the air. d. a person sets up a flag burning demonstration.