Howdy! Is there someone who can help me on questions 1-3 please?

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.