Hello,
Answer D
y=2x/7+4
x=2y/7+4
(x-4)*7/2=y
Answer: The Tree is 28 ft tall
How do we know this. To solve this problem we can use proportions.
4 → 3.5
x → 24.5
So now our unit number can be found doing 24.5 ÷ 3.5 = 7 So x ÷ 4 must also equall 7.
We can make equation: x ÷ 4 = 7
Know we can use our knowledge of finding x.
x = 7 × 4
x = 28
The tree is 28 ft tall.
Lets check our answer!
4 → 3.5
28 → 24.5
4 * 7 = 28
3.5 * 7 = 24.5
Equal because when you turn it in to a mixed number it turns out to be 7 1/2 :) Hope this helps!
