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December 22, 2014

December 22, 2014

Posted by **Sarah** on Friday, February 8, 2008 at 9:04pm.

2. A bicycle maker sold 300 bicycles last year at a profit of $300 each. The maker wants to increase the profit margin this year, but predicts that each $20 increase in profit will reduce the number of bicycles sold by 10. How many $20 increases in profit can the maker add in and expect to make a total profit of at least $100,000?

3. The current in a circuit is amps (I), and the impedance is ohms (Z). What is the voltage? (Hint: use the formula

4. Write two complex numbers whose product is 10.

- Algebra -
**bobpursley**, Friday, February 8, 2008 at 9:22pm4. what about 3+i, 3-i ? or -sqrt10 i, +sqrt10 i

or 1 + 3i,1-3i

on 1. You know the perimeter (180=2L+2w) and the area 1800<L*W

Solve by substution.

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