What is the ratio of the number of red marbles to the total number of marbles expressed in simplest terms?

Jack is considering a list of features and fees for denver bank. jack plans on using network atms about 4 times per month. what would be jack’s total estimated annual fees for a checking account with direct paycheck deposit, one overdraft per year, and no 2nd copies of statements?

How can you tell when x and y are not directly proportional?

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1