30 Points! To Who Ever Can Give Me The Answer

What scale factor was applied to the first rectangle to get the resulting image interior answer as a decimal in the box

The triangles in the diagram are congruent. if mzf = 40°, mza = 80°, and mzg = 60°, what is mzb?

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