there seems to be something wrong with my car, so I consult with an expert on cars and car repairs.  The expert tells me that I need a new transmission which will cost about $7,000.  In giving me this advice the expert is acting as my agent, but I see on her business card she installs transmissions.  Is she acting in my best interest or her acting for her personal benefit?

This is practice and I need it explained in detail please.

Dana was dating Wade, a wealthy real estate entrepreneur. Wade was much older than Dana and knew he needed to offer something “special” to make her stay. Wade told Dana that if she continued dating him, he would pay her $10,000 a month. Wade paid Dana for two years when suddenly, for no apparent reason, he stopped the monthly payments. Dana stayed with Wade for another six months, but decided enough was enough and left. She wanted the $60,000 she was owed for the six months; Wade refused to pay her. Is Dana entitled to the $60,000?

What analytical procedures would you undertake to reach a decision?