What is the perimeter?

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)

Solve for x i'll try to attach the files bc it's not letting me for some reason

Find the balance at the end of 4 years if 1000 is deposited at the rate of