Vivienne has 5 pets all of which are either birds or cats her pets have a total of 14 legs create a equation that can be used to find the number of birds that vivienne owns, b, and that the number of cats vivienne owns, c

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?

If the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?

Jordan got 27 out of 90 correct on his test . what fraction of the marks did her get correct