I need help please with unit rates

How many different ways can you make change for $.50 using only nickels, dimes, and quarters?

Although changes result from business transactions, the equality of the fundamental bookkeeping equation must remain. t/f

Pete is making decorations for a dinner party. the instructions tell him to use 9 flowers for a medium-sized decoration. complete each statement to adjust the flowers for different-sized decorations based on these instructions.