A fossil is found that contains 10% of the amount of carbon-14 found in a living being. About how old is the fossil? *

A. 15,300 years

B. 17,600 years

C. 19,200 years

D. 20,700 years

30 points :) (answered poorly will result in a report)

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

The avenues in a particular city run north to south and are numbered consecutively with 1st avenue at the western border of the city. the streets in the city run east to west and are numbered consecutively with 1st street at the southern border of the city. for a festival, the city is not allowing cars to park in a rectangular region bordered by 5th avenue to the west. 9th avenue to the east, 4th street to the south, and 6th street to the north. if x is the avenue number and yis the street number, which of the following systems describes the region in which cars are not allowed to park? 5th ave 9th ave