Write an equation of a parabola with its vertex at the origin and its focus at (0,-6)

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.)

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park what is the unit rate and what does it represent in the context of the situation?