Question

Multiple Choice
the half-life of a certain radioactive material is 37 days. an initial amount of the material has a mass of 477 kg. Write an exponential function that models the decay of this material. find how much radio active material remains after 6 days.
a) y= 477(1/2)^37x;0 kg
b) y= 477 (1/2)^1/37x; 426.288 kg
c) y= 2(1/477)^1/37x; 0.736 kg
d) 1/2 (1/477)^1/37x; 0.184 kg

Answer 1

I believe its B.

Answer 2

@smileyxl3

Answer 3

B looks right.

Answer 4

thanks , what do you think @campbell_st ?

Answer 5

well it takes 37 days to get to 238.5 kg..

so after 6 days there should be a good lump of it left..

I agree with @smilelyx13

Answer 6

thank you