document.write( "Question 821303: my problem is: \"The amount accumulated in a bank account over a time period 't' and based on an initial deposit of $200 is found using the formulas A(t)=200(1.025) and it has a squared 't' at the end of the closing parenthesis., t is less than or equal to 0. Time, t, is represented on the horizontal axis. the accumulated amount, A(t), is represented on the vertical axis.\"
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document.write( "what i want to know is:
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document.write( "a.How do you find the x-intercept?
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document.write( "b.How do you find the doain?
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document.write( "c.How to find the range?
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document.write( "d.And how to find out if the function has a max or min. value? \n" );
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Algebra.Com's Answer #494005 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! \"The amount accumulated in a bank account over a time period 't' and based on an initial deposit of $200 is found using the formulas A(t)=200(1.025) and it has a squared 't' at the end of the closing parenthesis., t is less than or equal to 0. Time, t, is represented on the horizontal axis. the accumulated amount, A(t), is represented on the vertical axis.\" \n" ); document.write( "A(t)=200(1.025)^t \n" ); document.write( "-------------------------- \n" ); document.write( "what i want to know is: \n" ); document.write( "a.How do you find the x-intercept? \n" ); document.write( "Let A(t) be zero; then solve for \"t\": \n" ); document.write( "200(1.025)^t = 0 \n" ); document.write( "(1.025)^t = 0 \n" ); document.write( "Note: there is no value of \"t\" that will make 1.025^t equal zero. \n" ); document.write( "-------------------------------------- \n" ); document.write( "b.How do you find the domain? \n" ); document.write( "Since A(t) is the amount in the bank and \"t\" is time. \n" ); document.write( "the domain is 0<= t <= oo \n" ); document.write( "-------------------------------- \n" ); document.write( "c.How to find the range? \n" ); document.write( "Since 1.025 is greater than 1 and t >= 0, A(t) >= 200 \n" ); document.write( "------------------------------------ \n" ); document.write( "d.And how to find out if the function has a max or min. value? \n" ); document.write( "Since 1.025 is greater than 1 there is no max. \n" ); document.write( "Since A(t) is asymptotic to zero there is no minimum. \n" ); document.write( "However, since t >= 0, A(t) is >=200. \n" ); document.write( "=========================================== \n" ); document.write( " \n" ); document.write( "=========================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "============= \n" ); document.write( " |