Determine if each of the following statements is true(T) or false(F). 7- In R with the usual metric, R+ has only one lower bound. 8- Let X,Y are metric spaces and f : X → Y .If for any AC X, f(A) C...

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Extracted text: Determine if each of the following statements is true(T) or false(F). 7- In R with the usual metric, R+ has only one lower bound. 8- Let X,Y are metric spaces and f : X → Y .If for any AC X, f(A) C f(A) then f is continuous. 9- For any closed set A in a metric space, A = A. 10- In any complete metric space, every Caushy sequence is convergent.