The cost of 5 scarves is $63.75. What is the unit price?

12. the amount of money in a bank account decreased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by ‘n', write 3 equivalent expressions to represent the amount of money in the bank account after the decrease?

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

When y’all answer can y’all explain too !