Asurvey of 500 high school students was taken to determine their favorite chocolate candy. of the 500 students surveyed, 124 like snickers, 148 like twix, 123 like reese's peanut butter cups, 76 like snickers and twix, 44 like twix and reese's peanut butter cups, 67 like snickers and reese's peanut butter cups, and 28 like all three kinds of chocolate candy. how many students like snickers, but not twix or reese's peanut butter cups?

If a + b = 28 and a - b = 10, then b =?

Carmen and matt are conducting different chemistry experiments in school. in both experiments, each student starts with an initial amount of water in a flask. they combine two chemicals which react to produce more water. carmen's experiment starts with 30 milliliters of water in a flask, and the water increases in volume by 8.5 milliliters per second. matt's experiment starts with 10 milliliters of water and increases in volume by 28% each second.

Camille is preparing for her english test by typing up the notes she recorded in the margins of her 98-page workbook. she already started typing her notes, and got through the first 14 pages. if camille types for x hours at a rate of 21 pages per hour, which equation represents the number of pages she has typed, and how many hours will it take to complete the task?