The marketing research department for a computer company used a large city to test market the firm s new laptop. The department found that the relationship between price p (dollars per unit) and demand x (units sold per week) was given approximately by
p=1,296 - 0.12x2 0<=x<=80
So, weekly revenue can be approximated by
R(x)=xp=1,296x - 0.12x3 0<=x<=80
Graph the revenue function R.