There are 5 yellow marbles and 8 orange marbles in a bag. you randomly choose one of the marbles. what is the probability of choosing a yellow marble? write your answer as a fraction in simplest form. the probability of choosing a yellow marble is

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.