What is -1/2 = 3/4x and how do I solve it

1/3(x-10)=-4 solve for x with steps

Issof claims that the scale factor is 1/2. which statement about his claim is correct

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?