What are the intercepts of the line y equals 3x + 9

Miguel bought a movie ticket that cost $5. he also bought popcorn and a bottle of water. how much did miguel spend altogether?

Liesl grew 7/12 of a foot in one year. her little sister grew 1/3 of a foot during that same year. how much more did liesl grow than her little sister did

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?