Benny brought five new baseball trading cards to add to his collection. the next day his dog ate half of his collection. there are now only thirty cards left. how many cards did benny start with? Pls show work and the check too.

Match each expression with its simplified form.

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

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