Awooden artifact from an ancient tomb contains 70% of the carbon-14 that is present in living trees. how long ago was the artifact made? (the half-life of carbon-14 is 5730 years. round your answer to the nearest whole number.)

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126