Question $4(12$ points$)$: Having recently learned about cronuts $($croissant$-$donut pastries invented by Chef Dominique Ansel in New York City$),$ Trojan Donuts is considering whether or not to add cronuts to its product line. It estimates the associated cost $($e$.$g$.,$ buying new machines and training its chefs$)$ to be $$18,000.$ Furthermore, there is a rumor that with a $30\%$ chance, Chef Ansel will move to Los Angeles $($because he is sick of snow storms in NYC$)$ to open a bakery. If he does, Trojan Donuts will lose some of its customers to Chef Ansel. If Trojan Donuts decides to add cronuts to its product line, Trojan Donuts estimates the change in its revenue for the coming year to be the following: