a boat sails 160km from a harbor P on a bearing of 036 to Q and then 200km on a bearing of 125 to another harbor R​

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

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?

State if it is acute obtuse or right