<PRE><B>Question 1148228</B>
Use the general point-slope formula
{{{ ( P - (-3) ) / ( x - 4 ) = ( 5 -(-3) ) / ( 20 - 4 ) }}}
{{{ ( P - (-3) ) / ( x - 4 ) = 8 / 16 }}}
{{{ ( P - (-3) ) / ( x - 4 ) = 1/2 }}}
{{{ P + 3 = (1/2)*( x - 4 ) }}}
{{{ P = (1/2)*x - 2 - 3 }}}
{{{ P = (1/2)*x - 5 }}}
After 60 months, the ordered pair is (  60, P )
{{{ P = (1/2)*60 - 5 }}}
{{{ P = 30 - 5 }}}
{{{ P = 25 }}}
25 thousand is the profit after 60 months
Here&#39;s the plot:
{{{ graph( 400, 400, -50, 50, -10, 10, (1/2)*x - 5 ) }}}
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