B.
It says x = y + 3. So what they did was put y + 3 in the place of x.
From the given density function we find the distribution function,

(a)



(b)



(c)



Answer:
No idea for this question
Answer:
1.62533254
Step-by-step explanation:
Answer and Step-by-step explanation:
The signs didn't really "swap". Instead, the whole function was divided by -1, or we could say the function was divided by -3. That would turn:
-18x² - 15x + 3 = 0
into
(-18 / -3)x² - (15 / -3)x + (3 / -3) = 0
6x² + 5x - 1 = 0
And that gives the "swapped signs".