Answer: 36 feet
Step-by-step explanation:
Let x be the height of tree
From the question, we can see there is a directly proportional relationship.
therefore, [tex]\frac{\text{height of Jason's eye}}{\text{distance of mirror from Jason}}=\frac{\text{height of tree}}{\text{distance of tree from mirrror}}\\\\\Rightarrow\frac{6}{7}=\frac{x}{42}\\\\\Rightarrow\ x=\frac{42\times6}{7}\\\\\Rightarrow\ x=36\ feet[/tex]
Hence, The height of the tree= 36 feet
