Answer :
What I did is 7×3 and got 21 then counted up in till I got to 29 and I got 6 not 8.
Answer: No, He needs to to mow 7 more lawns before he has mowed 29 lawns.
Step-by-step explanation:
Given: The number of lawns by Samuel in each month =- 3
The number of months he mowed the lawns = 7
Then, the number of lawns mowed by Samuel = [tex]7\times3=21[/tex]
Let x be the number of lawns he needs to mow before he has mowed 29 lawns, then x<29
The number just before 29 is 28
Then, [tex]x=28-21\\\Rightarrow\ x=7[/tex]
Hence, he needs to to mow 7 more lawns before he has mowed 29 lawns.