$1111-$ Exponential

cay Homework $($Sec$.$

Question $14,4\mathrm{.}5\mathrm{.}19$

HW Score: $85\mathrm{.}71\%,12$ of $14$ points

Points: $0$ of $1$

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Prehistoric cave paintings were discovered in a cave in France. The paint contained $31\%$ of the original carbon$-14.$ Use the exponential decay model for carbon$-14,A=A_0{e}^{-0\mathrm{.}000121t},$ to estimate the age of the paintings.

The paintings are approximately $$ years old. $($Round to the nearest integer.$)$