Suppose a calculator manufacturer has the total cost function C(x)=32x+16800\displaystyle {C}{\left({x}\right)}={32}{x}+{16800} and the total revenue function R(x)=56x\displaystyle {R}{\left({x}\right)}={56}{x}.

a) What is the equation of the profit function for the calculator?

P(x)=\displaystyle {P}{\left({x}\right)}=  

b) What is the profit on 2700 units?