document.write( "Question 1089393: Solve the modeling problem. Cell Phone Charges: A cell phone service provides communication between two cities. If x represents the number of minutes for the call, where x > 0 , then the function f(x) = 0.75[x] + 1.50 gives the total cost of the call in dollars. Find the cost of a 7.5 minute call. \n" ); document.write( "

Algebra.Com's Answer #703877 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

You can put this solution on YOUR website!
If x represents the number of minutes for the call, where x > 0 , then the function f(x) = 0.75[x] + 1.50 gives the total cost of the call in dollars.
\n" ); document.write( " Find the cost of a 7.5 minute call.
\n" ); document.write( ":
\n" ); document.write( "just replace x with 7.5
\n" ); document.write( "f(x) = .75(7.5) + 1.50
\n" ); document.write( "f(x) = 5.625 + 1.50
\n" ); document.write( "f(x) = 7.125 ~ $7.13 for a 7.5 min call
\n" ); document.write( ":
\n" ); document.write( "Wasn't that just too easy?! \n" ); document.write( "

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