An artifact was found to have an original amount of Carbon-14 of 32 grams. Approximately how many grams of Carbon-14 remain after 4300 years? Carbon 14 decays at a rate of -0.00012 grams per year.

31.5 grams

Step-by-step explanation:

we know that

The linear equation in slope intercept form is equal to

where

y is the amount of carbon 14 in grams

x is the number of years

m is the slope

b is the y-intercept or initial value

we have

The slope or unit rate is

--> is negative because is a decreasing function

The initial value is

substitute

For x=4,300 years

substitute in the linear equation

5050

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