Jason is a used-car salesman who sells domestic and foreign cars. He earns $7,000 for each domestic car sold and loses $3,500 for each foreign car sold. Due to certain business commitments, Jason has to sell at least 10 foreign cars each month. He needs to make at least $17,000 each month to cover his expenses. Which graph shows the number of cars he has to sell each month to at least cover his expenses?

Question

anonymous · Answer

attachment

amistre64 · Answer

what are your thoughts?

anonymous · Answer

Leaning towards C

amistre64 · Answer

me too at a first glance, but can you defend your position?

amistre64 · Answer

spose he sells, 11  fcars,  whats his total loss that has to be made up?

anonymous · Answer

38,500, then hed have to sell 6 american cars to come up positive

amistre64 · Answer

11(3500) + 17000 = 55500

55500/7000 = about 8
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so the point (8,11) is a profit point that should be on neither boundary line

anonymous · Answer

Which is c

amistre64 · Answer

yeah, or we can do it simpler

or pick a point thats clearly on a side ... (15,15)

15(7000) - 15(3500) > 17000

if its good, we pick that side

amistre64 · Answer

52500 > 17000  so (15,15) is the winning shade :)

C is fine

anonymous · Answer

Sweet (:

amistre64 · Answer

8 and 11 were just too close for comfort to me :)