Answer:
B. 184
Step-by-step explanation:
A proportion is an easy way to solve this:

Answer:
X = 119
Step-by-step explanation:
Step 1: Given
Y = -5 X = 7
Y = -85 X = n
Step 2:
-85 ÷ -5 = 17
Step 3:
17 × 7 = 119
Answer:
Y = -5 X = 7
Y = -85 X = 119
n = 119
(2.6 x 10² lb/tree) x (3.9 x 10¹¹ tree) = 1.014 x 10¹⁴ pounds .
I belive its number one :)