Solve the equation for the letter l: v=lwh

For each given situation, determine if the method of randomization is either appropriate or not appropriate

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.

The sum of two numbers is 17 and their different is 5. find one' answers