Зr + 5 > Зr - 2
I think r could be anything but I'm not sure ​

Infinitely many solution.

Step-by-step explanation:

1) Cancle 3r on both sides.

2) Since 5 > - 2 is always true, there are many solution.

Infinitely many solution.

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%