Angela records the time and the number of miles driven during each leg of a road trip. She plots the data on a scatter plot and determines that the correlation coefficient for the line of best fit is 0.917

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

Select all of the quadrants that the parabola whose equation is y=√x-4 (principal square root) occupies. i ii iii iv

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?