I’ll mark brainlest to whoever answers first :D

What is the value of 1/3× + 7x, when x =5

()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

What is the number 321,000,000 in scientific notation? also what is the number? ?