You divide 5 by 8 it’s really easy
You have to divide 20and 4 which your answer would be 5
12/5
It’s complicated to explain over text but i’ll try my best. In this problem, (-2,-7) and (3,5) are our coordinates. So take the y value in the second set of coordinates which here is (3,5) and take 5 minus the y value in the first set of coordinates. Same for x values. So 5-(-7)=12 and 3-(-2)=5. Hope this helps!
Wait for it to grow then cut it and it will be 15