If the hungry mathematicians split the cost equally , explain how much each should pay. show all your work and write and explanation

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels. ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0

If the diagram polygon abcd is a reflection across ef to make polygon a'b'c'd'.

Plz , will award brainliest find an equation for the line that goes through the points (5,-8) and (13,4)