3. Gaven is paid $12 per hour for mowing lawns and $15 per hour for planting gardens. He can work a maximum of 40 hours per week, and would like to
earn at least $300 this week. If m represents the number of hours mowing
lawns and g represents the number of hours planting gardens, which system
of inequalities could be used to represent the given conditions?
(3) m+g<40
12m + 15g < 300
(1) m+g2 40
12m + 15g 300
(2) m+g2 40
12m + 15g < 300
(4) m + g 40
12m + 15g 300