use quadratic regression to find the equation of the parabola going through these three points. (3,-12) (-2,43) (2,-5)

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate

The ages of personnel in the accounting department of a large company are normally distributed with a standard deviation of 7 years. there is a 0.02275 probability that the age of any randomly chosen person in the department is less than 22 and 0.15866 probabilty that the age of any randomly chosen person is greater than 43. what is the mean of this distribution?