An addition sentence, a multiplication sentence, and a division sentence are modeled on the number line.

the figure shows a number line. the numbers on the number line range from negative 15 to 15 in increments of 5. between every two numbers, four marks are made such that five divisions are formed between every two numbers. three rays are made one after the other towards left. the first ray starts from 0 and goes 4 divisions left, the second ray starts from the point where the first ends and goes 4 divisions left, and the third ray starts from the point where the second ray ends and goes 4 divisions left. all the three rays are labeled as negative 4.

what addition sentence is modeled?
what multiplication sentence is modeled?
what division sentence is modeled?