Question 967138
{{{ x }}} = hrs worked at cafe
{{{ y }}} = hrs worked at market
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(a)
{{{ 10x + 8y >= 800 }}}
(b)
{{{ y = 60 }}}
{{{ x <= 90 - 60 }}}
{{{ x <= 30 }}}
{{{ 10x + 8*60 >= 800 }}}
{{{ 10x >= 320 }}}
{{{ x >= 32 }}}
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No, student can't earn at least $800/month
If student works the maximum of {{{ 30 }}} hrs/month:
{{{ 10*30 + 8*60 = 300 + 480 }}}
{{{ 300 + 480 = 780 }}}
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Student needs to work 2 more hrs at cafe to
make 800/month