Domain and range please

How many of the 250 grandparents in the population would you expect to prefer online shopping with merchant a? merchant a: 4 merchant b: 6 merchant c: 2 merchant d: 3 other: 5 none: 5 answer choices: a.about 4 b.about 8 c.about 40 d.about 21

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup