FInd the domain of this function pls

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)

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

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