you are the assistant manager of an appliance store.Next month you will order two types of stereo systems.
i.model A: your cost is $300. your profit is $40
ii.model B: your cost is $400. your profit is $60
iii.you expect a profit of at least $4800.
iv.you expect to sell at least 100 units.
how many of each model should you order to minimize the cost?
**my equations might not be correct but is as far as i got**
(4800 >= 40a +60b)
y= 40a+60b 'y' equals the profit
maximum of each
my constraints ? ..... how do i graph it?....