What is r?

125=5(1+6r)

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.

One positive number is 9 more than twice another. if their product is 95, find the numbers

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?