PLEASE HELP ill give brainlist its easy math how many marbles could fill up the jar?
The jar is 15 cm

3 # of marbles, x 6.9cm height of water, Y
5 # of marbles, x 7.5cm height of water, Y
9 # of marbles, x 8.7cm height of water, Y
14 # of marbles, x 10.2cm height of water, Y
17 # of marbles, x 11.1cm height of water, Y
23 # of marbles, x 12.9cm height of water, Y

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.