The manager at a new bank wants to hire enough tellers to ensure no customer waits in line too long. To gather more information, he waits in line at other local
banks.
At each bank the manager notes the number of teller windows that are open, x,
as well as the number of minutes he has to wait in line before being served, y.

If 25% of y is 30, what is 60% of y?

Which of the following best describes the graph below? + + 2 + 3 + 4 1 o a. it is not a function. o b. it is a one-to-one function. o c. it is a many-to-one function. o d. it is a function, but it is not one-to-one.

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.