The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds) s=-4+3 cos t find the body's velocity at time t=pi/3 sec.

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.