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Math Help - Help with these problems please!

  1. #1
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    Question Help with these problems please!

    Ok, the first problem (and I dont have the exact numbers but i just need to know how I would do it) is : If a bathtub drips water at a certain rate then how long will it take for the bath tub to be filled?







    The second problem is: If you are given a certain amount of money for a building, and each square foot costs a certain amount. Determine how big a building you can build and then graph it.


    Help?
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  2. #2
    Member Jonboy's Avatar
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    If a bathtub drips water at a certain rate then how long will it take for the bath tub to be filled?

    Name the certain rate of dripping m. Let b be the amount of water in the tub already if needed. x would be the amount of time and y would be the amount of water and add a constraint on y variable since only so much water can be held in the bath tub.

    If you are given a certain amount of money for a building, and each square foot costs a certain amount. Determine how big a building you can build and then graph it.

    y = mx

    m = the price of each square root foot cost

    Put a constraint on the y - value. If you 200 dollars than the constraing would be: y\,\le\,200
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  3. #3
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    sorry i dont get it. especially the graph part. i dont know how im supposed to graoh it.
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  4. #4
    Grand Panjandrum
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    Quote Originally Posted by MathHelp2 View Post
    Ok, the first problem (and I dont have the exact numbers but i just need to know how I would do it) is : If a bathtub drips water at a certain rate then how long will it take for the bath tub to be filled?
    Let the volume be V units of volume , let the rate at which the tap drips be v
    units of volume per secons, then the time to fill is t = V/v


    The second problem is: If you are given a certain amount of money for a building, and each square foot costs a certain amount. Determine how big a building you can build and then graph it.
    Let the floor area of the building be A sq ft, let the cost per sq ft be úc,
    and let the amount of money be úS.

    Then A = S/c

    RonL
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