Best answer gets !

rectangle abcd is rotated 180°. what rule shows the input and output of the rotation, and what is the new coordinate of a′?

(x, y) → (−x, −y); a′ is at (5, −1)
(x, y) → (−y, x); a′ is at (−1, −5)
(x, y) → (y, −x); a′ is at (1, 5)
(x, y) → (x, −y); a′ is at (−5, −1)

If you had $1,900,000, how many days would it take you to spend all if you spent $1 a second. (there are 86,400 seconds in a day)

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76