If the question is asking "how many people went less than twice" then should i count the people who went twice as well or not? and why?

Is a currency whose value is tied to another currency, meaning that the exchange is fixed

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?

3.4a=57.8 what is the the value of a