Question

Hi help please quick

Answer 1

Initial amount: 934 g

After 80 years: 147 g

Explanation:

`A(t) = 934 ((1)/(2))^(t)/(30)`

The initial amount occurs at t = 0.

`A(0) = 934 ((1)/(2))^(0)/(30)`

`A(0) = 934 ((1)/(2))^0`

`A(0) = 934 * 1`

`A(0) = 934`

After 80 years, t = 80.

`A(80) = 934 ((1)/(2))^(80)/(30)`

`A(80) = 934 ((1)/(2))^(8)/(3)`

`A(80) = 934 (0.15749)`

`A(80) = 147`