|soccer nets per day | total cost | total revenue | | 1 | 7$ | $30 | | 2 | 9$ | $60 | | 3 | 10$ | $90 | | 4 | 11$ | $120 | | 5 | 13$ | $150 | how much profit does the company make from producing and selling four soccer nets? a) $51 b) $80 c) $109 d) $137