Question 476903
Each Sunday a newspaper agency sells x copies of a certain newspaper for $1 per copy.
The cost to the agency of each newspaper is $0.50. 
The agency pays a fixed cost of storage, delivery and so on, of $100 per Sunday. 

1. How many newspapers need to be sold to break even? 
Income = $x of x newpapers
Cost = 0.5x+100
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solve x = 0.5x+100
0.5x = 100
x = 200
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a) 100 c) 250 
b) –200 d) 200 
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2. What is the profit for the agency if 150 newspapers sold for a particular Sunday?
Income = 150 dollars
Cost = 0.5*150+100 = 175
Profit = -25
a) – 25 c) 25 
b) – 150 d) 175
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3. How many newspapers should the agency sell in order to realize a minimum profit of $600?
Profit = 0.5x-100
Solve 0.5x-100 = 600
0.5x = 700
x = 1400 
a) x = 1400 c) x = 600 
b) x = 200 d) x = 1000 
Is the answers as follows: can you please help me verify, Thank you 
1. D (200)
2. A (-25)
3. A (x=1400)
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All alright.
Cheers,
Stan H.