Find the value of a from given figure.​

Solve the x in the equation x^2+14x+17=-96

()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

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. consider the given table.