Question 89538
A small firm produces both AM and AM/FM car radios.
Let x is the number of AM radios and y the number of AM/FM radios.

The AM radios take 15 hr to produce, and the AM/FM radios take 20 hr. 
The number of production hours is limited to 300 hrs. per week.
Production EQUATION:
15x+20y <=300 hrs
------------------
  
The plant’s capacity is limited to a total of 18 radios per week, and existing orders require that at least 4 AM radios and at least 3 AM/FM radios be produced per week.
4<=x<=18
3<=y<=18
-------------------
 
Write a system of inequalities representing this situation. 
Then, draw a graph of the feasible region given these conditions,
{{{graph(400,300,-5,25,-5,25,(-3/4)x+15,3,18)}}}
Draw a vertical line at x=4 and at x=18.
============
Cheers,
Stan H.  
------------