Someone help please 13 points (all 3 questions)

A16 ounce bottle of orange juice says it contains 200 milligrams of vitamin c which is 250% uh just read the paper it explains it better

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

Which of the following represents a function? 50 !