How hard is calculus compared to algebra 2?

It's not much harder.

Calculus just requires that you put in a lot of work doing practice problems, which is something a lot of people aren't willing to do. And, it just involves a lot of memorization of formulas.

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this is the answer for you hope it

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%