Question 1125267
Let {{{ n }}} = number of lawns mowed
Income equation:
{{{ I = 20n }}}
Expenses equation:
{{{ E = 1*n + 665 }}}
Profit equation:
{{{ P = I - E }}}
Break even point is where {{{ P = 0 }}}
{{{ 20n - ( n + 665 ) = 0 }}}
{{{ 19n = 665 }}}
{{{ n = 35 }}}
Break even is at 35 lawns mowed
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Check:
{{{ I = 20*35 }}}
{{{ I = 700 }}}
And
{{{ E = 35 + 665 }}}
{{{ E = 700 }}}
And
{{{ P= 0 }}}