Arectangle with vertices a(-3, 1), b(1, 3), c(2, 1), and d(-2, -1) is rotated 90° clockwise about the origin and then dilated by a factor of 3 with the origin as the center of dilation to obtain rectangle a′b′c′d′. which statement about the transformed rectangle a′b′c′d′ is true? the function f(x, y) = (-3y, 3x) models the transformation to obtain rectangle a′b′c′d′, and vertex c′ lies in the first quadrant. the function f(x, y) = (-3y, 3x) models the transformation to obtain rectangle a′b′c′d′, and vertex d′ lies in the second quadrant. the function f(x, y) = (3y, -3x) models the transformation to obtain rectangle a′b′c′d′, and vertex b′ lies in the fourth quadrant. the function f(x, y) = (3y, -3x) models the transformation to obtain rectangle a′b′c′d′, and vertex a′ lies in the third quadrant.

the answer   is 200

step-by-step explanation:

this is a problem about poisson probabilities.   i don't know if you've

already studied poisson distributions, or if you have a place to look

to read more about the subject.  

here's how you can see a poisson distribution coming.   when there are

a lot of events that may happen at any time (or any place), and when

you're counting how many of them happen at a particular time (or a

particular place), and each event is independent of the others, then

the result is a poisson distribution.   this is roughly true for the

chocolate chips; one chip being in a cookie has only a small effect on

the probability that another chip will be in the cookie.

once you know you have a poisson distribution, you know a lot.   there

is only one parameter to a poisson distribution, so if you know the

mean, you know everything.   the form of the distribution is

  probability of n chips = {[e^(-x)]*(x^n)} / (n! )