Plz me with this
1. 4 + 4y
2. 4(y-1)
3. 4y + 1
4.1/2 (4-2x); 2-2x

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.)

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

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