Question

The amount of a radioactive isotope decays in half every year. The amount of the isotope can be modeled by f(x) = 346(one half)x and f(1) = 173. What does the 173 represent?

The starting amount of the isotope
The amount of the isotope after one year
The rate the isotope decreases <----
The number of years that have passed

Answer 1

@Vocaloid

Answer 2

if x = the number of years then f(1) = is the function when x = 1, so your answer would be...?

Answer 3

Idk...>.<

Answer 4

f(1) = 173 = the function when one year has passed

take a look at your answer choices

Answer 5

Oh wait C?

Answer 6

I mean B...

Answer 7

good, b

Answer 8

Yay ty :D