Can someone help me please

What is the distance between point a and b

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

Jack is considering a list of features and fees for current 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? a. $44 b. $104 c. $144 d. $176