Question

Algebra 2 Help please!!! Ill give a medal and become a fan :D

Answer 1

ill help

Answer 2

The half life of a certain radioactive material is 36 days. An initial amount of the material has a mass of 487 kg. Write an exponential function that models the decay of this material. Find how much radioactive material remains after 5 days. Round your answer to the nearest thousandth.

a)y=487(1/2)^36x ; 0.318kg
b)y=2(1/487)^1/36x ; 0.847kg
c)y=487(1/2)^1/36x ; 442.302kg
d)y=2(1/487)^36x ; 0kg

Answer 3

@joseph211877

Answer 4

Thats the problem^

Answer 5

A

Answer 6

@joseph211877 Thanks :)

Answer 7

your very well come :)

Answer 8

I think its C but that's just me.

Answer 9

A = A(o)[0.5^(t/t(1/2)]
A = 487[0.5^5/36] = 487(0.9082) = 442.302kg

Answer 10

Looking at the initial and final amount, initial amount of 487, and final amount of 442.3. The half life is 36 days and only 5 days have passed, meaning we need to have more than 243.5 which only C has.

Answer 11

yah hes right its C sorry

Answer 12

After the semicolon, is the amount left. 36x, means we multiply each day by 36, instead of (1/36)x, which means we multiple each day by 1/36, ty ty.

Answer 13

Thanks guys! I changed it:) @christopher_miller420 @joseph211877

Answer 14

yup just doing my job :P