Answer:
16 feet
Step-by-step explanation:
Set up a proportion where x is the height of the tree:
= 
Cross multiply and solve for x:
5x = 80
x = 16
So, the tree is 16 feet tall
Answer:

Hope this helps! If you need an explanation, I've got you.
Answer:
10
Step-by-step explanation:
Based on the given conditions, formulate: \(28 \times ( 1 - 65\% )\)
Calculate the sum or difference:\(28 \times 0.35\)
Calculate the product or quotient:\(9.8\)
Find the closest integer: 10
Answer: 10
B, because the height of the boys can be anywhere between any positive number, however not negative because you can't be a negative height.
D, its is non-linear because their heights won't be going up by the same amount each time your x-value increases because the human body grows at different rates, it will be increasing because the human body is always growing until death.