What is the answer to this i really need the answer for my test 8/9+2/3+1/6

()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

You have 138.72 in your saving account u take out 45.23 and 18.00 you deposit 75.85 into your account

Whoever gets this right gets the ! the half life of a soul smelling substance is 4 years. if you have 8 oz of this strange substance, how much of it will you have after 20 years? show work.