Which topic would be best displayed as a bar graph?

what is your age?
what is your height?
what is your hair color?
how tall are you?

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. solve this quadratic equation using the quadratic formula. 2x2 - 2x=1 need asap