Hello could I please get a straightforward answer I need to catch up pelsse

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

The domain of a function can be represented by which one of the following options? o a. a set of output values o b. a set of f(x) values o c. a set of input values o d. a set of both input and output values

The circle below is centered at the point (3, 1) and has a radius of length 2. what is the equation?