If Ahn select a card at random, what is the probability that she is Alexa card with a tree on it, replaces it, and then select a card with a dog on it?

I'm confused on this could anyone me and show me what i need to do to solve it.

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

Formulate alisha has a number in mind. if she adds three to her number the result is less than five. use this information to write and solve an inequality about alisha's number. then graph the solution set.