Answer:
y = 36
Step-by-step explanation:
4(9) = 4 x 9 = 36
it would be 9.93300
so 3 decimal places because the zeros don't count
For the range:
5, infinity
I'm not really sure If I would be much help but I'll try best k? (cries a little) So you do 100
+ 6.0
+ 4.0
_________________
11 .0
So your answer is 11.0 for the tall tree.