Vance sells between 300 and 310 items at a convention. he pays a one time $450 fee, and earns $15 commission for each item that he sells. the function p(i)=15i−450 represents vance's convention earnings as a function of items sold. what is the practical domain of the function?

See attachment below and find the equivalent of tan(∠qsr)

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?

Katie wants to collect over 100 seashells. she already has 34 seashells in her collection. each day, she finds 12 more seashells on the beach. katie can use fractions of days to find seashells. write an inequality to determine the number of days, dd, it will take katie to collect over 100 seashells.