What is the scale factor when △rst is dilated to △r's't'? what is the value of x?

a. scale factor 0.75, x = 8
b. scale factor 0.75, x = 4.5
c. scale factor 1.3, x = 8
d. scale factor 1.3, x = 4.5

Exclude leap years from the following calculations. (a) compute the probability that a randomly selected person does not have a birthday on october 4. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability that a randomly selected person does not have a birthday on the 1st day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability that a randomly selected person does not have a birthday on the 30th day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (d) compute the probability that a randomly selected person was not born in january. (type an integer or a decimal rounded to three decimal places as needed.)