Find the sum of the following infinite geometric series
111-1
32
5
11 = 1
32
5.
80
5
80
3

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?

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?