PLEASE HELP WITH THIS(INORDER FOR ME TO GIVE YOU A BRIANLIST, YOU MUST SHOW A PICTURE AND EXPLAIN HOW U GOT IT)(will give brainlist and thanks)(Find the premeter)

If 20% of a number is 35, what is 50% of that number?

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.