Tuesday
March 31, 2015

Homework Help: Algebra

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

1. Juanita has 180 feet of fencing that she intends to use to build a rectangular play area for her dog. She wants the play area to enclose at least 1800 square feet. What are the possible widths of the play area?


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.

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