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vbravo
Average Member

USA
9 Posts

 Posted - 03/26/2013 :  21:43:24 Here is the question from the sample problem I was given.------------------------The total imports of petroleum (in millions of barrels per day) in a given year is approximated by the polynomial 30x-527x+2082x+6055, where x represents the number of years since 1975. The corresponding total of exports of petroleum is -x+14x+23x+189. Write a polynomial that represents how many more barrels per day were imported than exported in a given year.To find the polynomial representing how many more barrels per day were imported than exported in a given year, subtract the polynomial representing exports from the polynomial representing imports.Write the subtraction statement.30x-527x+2082x+6055-(-x+14x+23x+189)Change to polynomial being subtracted.-(-x+14x+23x+189)=x-14x-23x-189*This is where I get lost, I don't understand what, 'Add the terms of degree 3, degree 2, degree 1 or degree 0" what do they mean?Add the terms of degree 330x+x=31x *How did we get 30x?Add the terms of degree 2-527x-14x=-541x *How did we get -527x?Add the terms of degree 1 *How did we get 2082x?2082x-23x=2059xAdd the terms of degree 0 *How did we get 6055?6055-189=5866The combined terms are 31x,-541x,2059x, and 5866.Therefore, 31x-541x+2059x+5866 million more barrels per day were imported than exported.Thank you for your help,Respectfully,~Virginia Edited by - vbravo on 03/26/2013 21:50:59

vbravo
Average Member

USA
9 Posts

 Posted - 03/26/2013 :  21:54:34 I GOT IT!!! yeah,I figured it out by my self!!Thank you for being there, in the event that I could not figure it out.Thank you for all your hard work,Respectfully,~Virginia
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