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Simple Math Question Please Help. If a radioactive substance with a mass of 64 grams decays at a rate of 25% every hour modeled by the equation m(x) = 64(0.75)x then how many gr…

Simple Math Question Please Help. If a radioactive substance with a mass of 64 grams decays at a rate of 25% every hour modeled by the equation m(x) = 64(0.75)x then how many gr…
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3 votes
Simple Math Question Please Help.

If a radioactive substance with a mass of 64 grams decays at a rate of 25% every hour modeled by the equation m(x) = 64(0.75)x then how many grams will remain in 3 hours?

asked
User Mohammad Nikravan
by
8.1k points

1 Answer

5 votes

Answer: 27 grams

Explanation:

m(x) = 64(0.75)ˣ

m(3) = 64(0.75)³

= 64(.421875)

= 27

answered
User Grhm
by
8.5k points
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