How many different license plates are possible if digits and letter can be repeated if the configuration is 3 letters, 2 digits, 2 letters?

For a read-a-thon, jay and odhràn each started reading a book at the same time and continued reading for several hours. jay's book had 278 pages, and he read 55 pages per hour. odhràn's book had 238 pages, and he read 45 pages per hour. after how many hours did they have the same number of pages left, and how many pages were left?

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)