The health department estimates that eight vials of malaria serum will treat 100 people. at this rate, how many vials are required to treat 175 people

What statement is true? 2x^2-9x+2=-1

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?

The graph of f(x) = |x| is transformed to g(x) = |x + 11| - 7. on which interval is the function decreasing?