6-a man standing in a valley between two parallel mountains fires a gum and hears echo at an mterval of 2 s and
3.55. what is ;
(a) the distance between two mountains
(b) the location of the man with respect to the mountain. (speed of sound - 334 m/s)

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.