The volunteers collect 15,682 cans at entrance A; 18,940 cans at entrance B; 16,114 cans at entrance C; and 12,468 cans at entrance D. Did they collect more or fewer cans than desired? How many more or fewer?

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

What are the exclude value of mn+3m