To make an international telephone call, you need the code for the country you are calling. The codes for country A, country B, and C are three consecutive integers whose sum is 78. Find the code for each country.

Of the ones listed here, the factor that had the greatest impact on the eventual destruction of native americans' ways of life was the development of the a) automobile. b) highway. c) railroad. d) steamboat.

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?