document.write( "Question 1072397: a mobile phone company charge for a local call such that $0.5 in the first minute and $0.3 every minute there after. Find a formula for the total amount charged for call lasting in x minutes \n" ); document.write( "
Algebra.Com's Answer #687340 by jorel1380(3719)\"\" \"About 
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X is the minutes a call lasts. To compute the cost of each call, you can use:
\n" ); document.write( "C(cost)=$.5 + $.3(x-1) where x is the length of the call in minutes (you subtract the first minute from the length, since that cost is fixed at $.5). ☺☺☺☺
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