document.write( "Question 85815: When x number of units are sold, the price of each unit (in dollars) is given by P= -x/2+75. Find the unit price when the following quantities are sold: 2,7,9,11. \n" ); document.write( "
Algebra.Com's Answer #62058 by tutorcecilia(2152)\"\" \"About 
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Basic formula: P(x)= -x/2+75
\n" ); document.write( "Substitute each value of \"x\" into the basic formula and solve.
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\n" ); document.write( "P(2)= -(2)/2+75
\n" ); document.write( "P(2)=-1+75
\n" ); document.write( "P(2)=74
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\n" ); document.write( "P(7) -(7)/2+75
\n" ); document.write( "P(7)=-7/2+75/1
\n" ); document.write( "P(7)=-7/2+(75/1)(2/2) [find the lowest common denominatro (LCD)]
\n" ); document.write( "P(7)=-7/2+150/2
\n" ); document.write( "P(7)=143/2 = 71.5
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\n" ); document.write( "P(9)= -(9)/2+75
\n" ); document.write( "P(9)= -9/2+ (75/1)(2/2)
\n" ); document.write( "P(9)= -9/2+ 150/2
\n" ); document.write( "P(9)= 141/2=70.5\r
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\n" ); document.write( "P(11) = -(11)/2+75
\n" ); document.write( "P(11) =-11/2+ (75/1)(2/2)
\n" ); document.write( "P(11)=-11/2+150/2
\n" ); document.write( "P(11)=139/2=69.5\r
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