The half life for carbon-14 is 5730 years. if a plant had 30 units of carbon-14 in it when it was cut, find an equation that models the decay of carbon-14 in this plant.

- 1.613 = -1.6 or -1.61

-1.522 = -1.5 or -1.52

0.587 = 0.6 or 0.59

3.079 = 3.1 or 3.08

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value