Question

You are given 230 grams of a substance with a half-life of 0.75 years. How much will remain after 3 years?
Select one:
a. 230 grams
b. 57.5 grams
c. 14.38 grams
d. 7.19 grams

Answer 1

my answer is c

Answer 2

@LorenBeech do you know?

Answer 3

if one half-life is 0.75 years, how many half-lives will pass over 3 years?

(what's \(\frac{3}{0.75}\))?

Answer 4

4

Answer 5

so you just divide 230 in half 4 times

Answer 6

exactly

Answer 7

so my guess is right?

Answer 8

yep

Answer 9

Great! Thank you for helping me :)

Answer 10

YW