The first picture is for (-4, 7) and the second picture is for (0, 8)
It's scalene because it has different sides and obtuse because root 40²+30²=50
110>50
Lets break this down step by step.
4+4+4+4=16 lawns a week.
16+16+16+16=64 lawns a month.
64+64+64+64=256 lawns a year.
Then we take 256 x $25 to get $6,400 last year.
6,400<---Answer
-Seth