*! * which of the following expressions could be factored using difference of squares? a.) x^2 - 17 b.) 4x^2 - 81y^4 c.) x^2 + 16 d.) 2x^2 - 4

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%