If rst is congruent to xyz, which staement must be true

This needs to be done quick you are studying different function tools and begin working with this function y=-160-9(x) use the equation to answer the question y=-160-9(x) what is the y value when x equals -13? y=-160-9(x)

Which expression is not a polynomial?

15/16 as a decimal rounded to the nearest hundredth