document.write( "Question 501784: Maria paints portraits that she sells for $30 each. Her cost, C, is C= 160+16n, where n = number of portraits sold. Write an inequality to represent the number of portraits she needs to sell to earn a profit of at least $300 \n" ); document.write( "
Algebra.Com's Answer #338696 by ankor@dixie-net.com(22740)\"\" \"About 
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Maria paints portraits that she sells for $30 each.
\n" ); document.write( "Her cost, C, is C= 160+16n, where n = number of portraits sold.
\n" ); document.write( " Write an inequality to represent the number of portraits she needs to sell to earn a profit of at least $300
\n" ); document.write( ":
\n" ); document.write( "Revenue; r = 30n
\n" ); document.write( "cost; c = 160 + 16n
\n" ); document.write( "r - c = profit; therefore
\n" ); document.write( ":
\n" ); document.write( "30n - (160+16n) => 300
\n" ); document.write( "30n - 160 - 16n => 300
\n" ); document.write( "30n - 16n = 300 + 160
\n" ); document.write( "14n => 460
\n" ); document.write( "n => \"460%2F14\"
\n" ); document.write( "n => 33 portraits to make at least $300
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check this
\n" ); document.write( "30(33) = $990 revenue
\n" ); document.write( "160 + 16(33) = $688 cost
\n" ); document.write( "-----------------------
\n" ); document.write( "profit: $302
\n" ); document.write( ":
\n" ); document.write( "You can check this with 32 portraits and see it will be less than $300 profit \n" ); document.write( "
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