The expression 4c - 3 is equal to _ when c = -2

How much would it be worth in 5, 10, 20 years

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.

Whats the difference between -25 and 17