Which shows all the like terms in the expression? 7x-3+7x+1

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.

Proportions in triangles solve for x

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?