Which equation expresses D in terms of T and A

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line

Complete this sentence with the best of choices given

Acertain company's main source of income is a mobile app. the company's annual profit (in millions of dollars) as a function of the app's price (in dollars) is modeled by p(x)=-2(x-3)(x-11)p(x)=−2(x−3)(x−11 ) which app prices will result in \$0$0 annual profit? enter the lower price first.