1.5x = 3 someone help plz

What are the soultion(s) to the quadratic equation 40- x^2=0

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.

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.