Find the domain and range and determine if the graph is a function or not​

The function g(x) is defined as shown. x-1, -2 g(x) = 2x+3, -1 6-x, x23

What is the solution to the equation 9^(x+1) =27

In the pendulum formula t=2pi. read the problem on the picture ! ; $; $; ! ; ! ; ! ; )$; ! ; ! ; ! ; $; $; $! ; ! ; ); $; $$