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Math Help - anybody have any ideas on parts a and b of this problem?

  1. #1
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    anybody have any ideas on parts a and b of this problem?

    My guess is that no equation can be derived from the original equation for part b.

    Problem:
    FedEx Mailing cost. The cost C of shipping a FedEx priority overnight package weighing 1 Lb or more a distance 1001 to 1400 miles is given by C = 2.8 x + 21.05 where x is the number of pounds. (source; FedEx corporation)
    a) Is the distance a factor in calculating the cost? If so , is it included in this equation. Discuss why or why not.









    b) Using this equation, can you find another equation that calculates the cost for shipping a package 1401 to 2000 miles or an equation for 2001 to 2500 miles? if so please include your equations






    c) Discuss the reasoning and methods of finding your equations.



    Use the above FedEx cost equation to calculated the cost of shipping a 10 lb package 1250 miles.



    Use your equation(s) to calculate the cost of shipping the same 10 lb package 1800 miles.



    Use your equation(s) to calculated the cost of shipping the same 10 lb package 2400 miles.
    Are your answers reasonable? Discuss the reasonableness of your answers, why or why not.
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  2. #2
    ixo
    ixo is offline
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    a). Yes, No: Surely there are different equations for different distances. exa c=2.8x+21.05 when 1001<m<1400 is probably not the same equation they use when 1401<m<1800, because it costs more fuel to travel further. Since the 21.05 is added its probably a flat rate and doesn't fluctuate. The 2.8 is probably the variable that fluctuates with distance traveled to accommodate fuel cost.

    b) 1400/500 = 2.8 so 2000/500 = 4 similarly 2500/500 = 5
    so in c=gx+f where c = cost, g = gas ratio (maxmiles/500), x = weight, and f = flat rate plug in your numbers to create the formula and there ya go. You can use this to explain and solve part c.
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