62% of salmon pass through a single dam unharmed. By what percent does the number of salmon decrease when passing through a single dam?

It says factor each expression completely 8y+48

Can someone check if i did this correct. it’s number 4 if you’re wondering.

You and a friend went to the movies.you spent half your money on tickets. then you spent 1/4 of the money on popcorn, $2 on candy, and $3 on a soda. if you have $1 left, hiw much money did u take to the movies?