Didn't you mean "you are" or "you're?"
You didn't indicate which problem you wanted your helper to focus on. So I will arbitrarily choose #2.
This large triangle is made up of two smaller triangles: the smaller triangle has sides of 2 and x and hypotenuse of y. The larger triangle has sides x and 5 and hypotenuse z. Look carefully: The largest triangle has hypotenuse (2+5) and sides y and z. Now you have three equations in three unknowns and thus have enough info to find the values of x, y and z.
Think about this. What should you do first? Type back your ideas. Then I'll help you solve this problem.