ONLY ONE PROBLEM FOR 10 POINTS PLEASE HELP ME :(
(radical function)
will report if wrong

9514 1404 393

  see below (2nd graph)

Step-by-step explanation:

It can be useful to consider the value of f(4).

  f(4) = 1/2√4 -1 = 1/2(2) -1 = 1 -1 = 0

This matches the 2nd graph best.

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%