Answer is -12 hope I helped.
Connect them in a traingle
put a point ANYWHERE outside the triangle
connect them
tada
To know the initial amount of the radioactive substance, you should read the graph in the y - axis when the x = 0, because at x = 0 this means the intial point of the graph or the initial amount of the substance. so at x = 0 the y = 45 so the initial amount is 45 g
The answer is 22. Work: n=3 and 3 to the second power would be 9 because 3x3=9 and 9+13=22. Hope I could help! Tell me if i’m wrong though!
