Consider the function y=f(x) shown below to answer these questions: [= a. What is the domain off? Answer using set or interval notation, or state "all real numbers." b. What is the range of f? Answer using set or interval notation, or state "all real numbers." c. Find the value of f(11). Approximate if necessary. d. Find all values of x such that f(x)=2. Approximate if necessary. OL 7 6- -3 9 10 11 12 13