PLLZ HELP ME THIS IS A MAJOR GRADE FOR AN SAT PRACTICE TEST

Which of the following transformations does not preserve congruence? * 5 points a. (x, y) → (y − 3, x − 3) b. (x, y) → (x + 5, y − 1) c. (x, y) → (y + 9, −x + 2) d. (x, y) → (3x + 1, 3y − 2)

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.

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41