Louis has 7 1/2 ft of red ribbon. how many red bows can he make using 3/4 ft pieces of ribbon for each bow?

Which statement is true about the function f(x)= square root -x ? the domain of the graph is all real numbers. the range of the graph is all real numbers. the domain of the graph is all real numbers less than or equal to 0. the range of the graph is all real numbers less than or equal to 0.