Please help me it’s due soon

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)

The dash figure is a dilation if the original figure. find the scale factor. classify the dilation as an enlargement or a reduction

Graph each quadratic function and identify its key characteristics. f(x) = x^2 - 2x - 3