Angle homework , help fasttt thanksss

Which answer is it for it to be simplified completely?

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)