Can someone explain and answer this I really dont get it at all i mark brainliest

()1. how do you find range? 2.the following set of data is to be organized into a histogram. if there are to be five intervals on the graph, what should the length of each interval be? 30, 34, 23, 21, 27, 25, 29, 29, 25, 23, 32, 31

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g