Polynomials

Question

Write a polynomial giving the difference in revenue generate by selling x shirt at a price of $y and selling x+10 shirts at the same price

Answer 1

Taken step by step:

 

x shirts sold at $y have a revenue (R1) of:

 

R1=xy

 

x+10 shirts sole at $y have a revenue (R2) of;

 

R2=(x+10)y=xy+10y

 

The problem statement is to find the difference in revenue.  (we'll call this R)

 

R=R2-R1

subsitute the above expressions:

 

R=xy-xy+10y

xy-xy=0 so:

 

the difference in revenue: R = 10y dollars.