Which of the following is a solution of x2 + 4x = -8? O x = -2 - 21
O x = 2 + 21
O x = -4 + 41
O x = 4 - 41

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

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?

When only separate discreet points are graphed it is called?