Help due today please​

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

A10 inch cookie cake is divided into 8 slices. what is the area of 3 slices

As a self-employed seamstress, you know that it takes 7 yards of material to make 3 jackets. you bought 15 yards of material to make 7 jackets. did you buy enough material? if not, how much were you over or under?