Write the equation of a line with the slope of 1 half that goes through (4 ,-5)

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)

What is the difference between regular convex and concave polygons

What percent of the circle below is shaded?