Which expression represents the distance between two points x and y on the number line (x=-4 and y =3)

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.