Omar wants to clear out he bushes in his backyard so he can flood it to make an ice rink in the winter. he counted 140 small bushes. on the first day, omar cleared 7 bushes. each day after that, he cleared 3 more bushes that he did before. how many days will it take for omar to finish clearing bushes? plz me!

1st day: 7 bushes. Every next day Omar was clearing 3 more than he did day before.
2nd day:10 bushes
3rd day:3 more bushes than 2nd day so 6 more bushes. 10+6=16 bushes
4th day: 3 more bushes than 3rd day so 9 more bushes. 16+9=25 bushes
5th day: 9+3=12. 25+12=37 bushes.
6th day: 12+3=15. 37+15=52 bushes.
7th day: 15+3=18. 52+18=70 bushes
8th day: 18+3=21. 70+21=91 bushes cleared till 8th day.
9th day: 21+3=24. 91+24=115 bushes.
10th day: 24+3=27. 115+27=142
Omar needed 10 days to clear 140 bushes.