How to find the domain of a composite function khan academy

Measure a and b and find their sum. how are the angles related?

The answer is 7.2 how would you put this as money

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