If a profit maximizing business using this table hired 4 workers then the market wage must have been __________. If, however, this business only hired 2 workers then the market wage must have been __________. | Workers | Total Revenue per Hour| | 1 | $30 | | 2 | $50 | | 3 | $65 | | 4 | $75 | | 5 | $80 | a $4; $13 b $4; $16 c $7; $16 d $7; $13 e $11; $13 f $11; $22