Find the length of the line segment that joins A (3,7) and B (12,14) Give your answer to one decimal place ​

()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

Anyone know? is appreciated! will mark brainliest if correct!

Ateacher brought a pack of 17 batteries . each calculator uses 3 batteries . how many calculator can the teacher fill with batteries