Four subtracted from the reciprocal of a number

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.

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)