13,6: 1,7 com conta e facultado

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?

Select the correct answer and solve for y

On ryan's last social studies test there were two types of questions true/false worth 3 points each and multiple choice questions worth 4 points each