A survey of 150 11th and 12th graders was given to determine what their favorite snack was. 90 said candy (40 of which are juniors). 40 said Chips (15 were seniors), and 15 juniors and 5 seniors said popcorn was their favorite. How many seniors preferred candy?

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?