Define the function three_classify that takes a row from test as an argument and classifies the row based on using 3-Nearest Neighbors. Use this function to find the accuracy of a 3-NN classifier on the test set. accuracy should be a proportion (not a percentage) of the schools that were correctly predicted.

The vector matrix [2/7] is dilated by a favor of 1.5 and then reflected across the x axis. if the resulting matrix is [a/b] then a= and b=

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Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.