What is 3+1? Can somebody please explain? I've been trying to figure this out for hours and I need to know soon because it's for my homework. I think it might be 7 but I'm not sure.

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

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?

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth