There are 5 people in the brass ensemble, and
each person plays a different instrument. all of the
musicians want to play a piece with someone who
plays a different instrument. the instruments are
trombone, cornet, sousaphone, french horn
and tuba. which list contains all the instrument
combinations?

Derek purchased a new gym membership. it costs him seven dollars a month plus two dollars for every time that he visits the gym. he wants to spend less than 25 dollars a month to visit the gym. write an inequality that models the situation using the variable v for the number of visits per month. also find the maximum number of visits he can make to the gym and still keep his cost below 25 dollars a month.