2(n+3)= 2n+3
explain whys it weong ?

F(x) = (x^2 + 3x − 4) and g (x) = (x+4) find f/g and state the domain.

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is

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?