Algebra
posted by lizzie .
Do I have the right answer?
A store owner bought a machine that laminates cards. the machine cost $1000. Each laminated item costs the owner $.50, but he charges the customers $4.00 per item. how many cards must be laminated and sold before the owner makes a profit from the machine?
a. 133
b. 223
c. 285
d. 286
Answer b

I got d

How?

3.5x = 1000
x = 1000/3.5
x = ? 
well .50 cents is how much it costs the owner. So that deducted from the 4 dollars leaving 3 dollars and 50 cents. I did 1000 dollars divided by the 3.50 cents and got 285.7. I rounded up which equal 286. How did you get your answer?

Oh, I didn't subtract the .50 I added it. I see what I did. Thanks!

I hope Andy gets his decimals/cents straight!
.50 cents = half a cent
3.50 cents = three and a half cents
I think he means dollars  he should drop the decimal points.
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