document.write( "Question 121511: The fromula A=30(0.46)^t describes the amount of ASA in a typical patient's bloodstream in mg/cm^3 in terms of the time t in hours after the peak dosage.Make a table of values and draw the graph of this function. Can someone please help me ??? \n" ); document.write( "
Algebra.Com's Answer #89156 by ankor@dixie-net.com(22740)\"\" \"About 
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The formula A=30(0.46)^t describes the amount of ASA in a typical patient's bloodstream in mg/cm^3 in terms of the time t in hours after the peak dosage.Make a table of values and draw the graph of this function.
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\n" ); document.write( "Let's make a table starting with t = 0 which is the peak dosage
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\n" ); document.write( "In the formula substitute 0, for t and find the ASA
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\n" ); document.write( "A = 30(.46)^0
\n" ); document.write( "We know that any number with an exponent of 0 is = 1,
\n" ); document.write( "A = 30 * 1
\n" ); document.write( "A = 30, (which is what you would expect)
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\n" ); document.write( "The first value in the table> (When t = 0; A = 20)
\n" ); document.write( " t | A
\n" ); document.write( "-------
\n" ); document.write( " 0 | 30
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\n" ); document.write( "Find A when t = 1
\n" ); document.write( "A = 30(0.46)^1
\n" ); document.write( "A = 30 * 0.46
\n" ); document.write( "A = 13.8
\n" ); document.write( "Continuing our table ( When t = 1; A = 13.8)
\n" ); document.write( " t | A
\n" ); document.write( "-------
\n" ); document.write( " 0 | 30
\n" ); document.write( " 1 | 13.8
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\n" ); document.write( "Find A when t = 2
\n" ); document.write( "A = 30(0.46)^2
\n" ); document.write( "A = 30 * .2116; found (.46^2 with a calculator)
\n" ); document.write( "A = 6.348
\n" ); document.write( "Continuing our table
\n" ); document.write( " t | A
\n" ); document.write( "-------
\n" ); document.write( " 0 | 30
\n" ); document.write( " 1 | 13.8
\n" ); document.write( " 2 | 6.348
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\n" ); document.write( "You should be getting the idea, I going to jump to when t = 6 hrs
\n" ); document.write( "You can fill in the values for 3, 4, 5, just like we just did;
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\n" ); document.write( "A = 30(0.46)^6
\n" ); document.write( "A = 30 * .0095 (.46^6 on a calculator again)
\n" ); document.write( "A = .284, almost gone, would you say?)
\n" ); document.write( " t | A
\n" ); document.write( "-------
\n" ); document.write( " 0 | 30
\n" ); document.write( " 1 | 13.8
\n" ); document.write( " 2 | 6.348
\n" ); document.write( " 3 |_____
\n" ); document.write( " 4 |_____
\n" ); document.write( " 5 |_____
\n" ); document.write( " 6 | .284
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\n" ); document.write( "They want you to graph these values. Everything is positive
\n" ); document.write( "Let y axis be A and the x axis be t
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\n" ); document.write( "The scale will be y: 0 to 32, x: 0 to 8
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\n" ); document.write( "If you plot the above values as x/y coordinates, your graph should look like this
\n" ); document.write( "\"+graph%28+300%2C+200%2C+-4%2C+8%2C+-10%2C+32%2C+30%28.46%29%5Ex%29+\"
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\n" ); document.write( "By looking at this graph you can see approximately what amt is left in the bloodstream after so many hrs.
\n" ); document.write( "Check to see if it agrees with the values you calculated for 3, 4 and 5.
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\n" ); document.write( "Did I explain this so you know what's going on here? Let me know.
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\n" ); document.write( "So sorry about this mistake, it changed things though out the problem, please
\n" ); document.write( "check everything again. A\r
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