Monday
July 28, 2014

Homework Help: Algebra (word problems)

Posted by Colin on Wednesday, December 12, 2007 at 10:13pm.

1) a small pipe can fill a tank in 16 min more time than it takes a large pipe to fill the same tank. Working together, both pipes can fill the tank in 6 min. How long would it take each pipe working alone to fill the tank?

2) a car travels 240 mi. a second car, travelling 12 mph faster than the first, makes the same trip in 1h less time. Find the speed of each car

3)a software manufacturer has determined that 500 copies per week of a new computer program will be sold at a price of $100. at a price of $110, the number of copies sold per week would decrease to 450. Determine a linear function that will predict the number of copies that would be sold at a price of $150

4)The financial manager of a hotel has determined that 600 rooms per night will be rented if the room rate per night is $120. For each $10 increase in price of a room, 20 fewer rooms will be rented. Determine a linear function that will predict the number of rooms that will be rented for any given price per room. use this model to predict the number of rooms that will be rented if the room rate is $150

5)a gerneral building contractor estimates that the cost to build a new house is $50,000 plus $70 for each square foot of floor space in the house. determine a linear function that will give the cost of building a house that contains a given number of square feet. use this model to determine the cost of building a house that contains 6000 feet.

Thanks for any help!

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