What is the equation, in standard form, of a parabola that contains the following points? (-2,15),(0,3),(4,27)

A. Y=-2x^2+2x-3
B. Y=2x^2-2x+3
C. Y= -3x^2-2x-2
D. Y= -2x^2+2x+3

Please give steps to the answer

Why are radio observatories located in valleys far away from urban centers? a. to shield them from electromagnetic interference b. to avoid sound pollution c. to avoid disturbing people living in the city d. to shield them from water vapor

Typically, passing a dual enrollment course in english would earn a student: a. weighted credit on college transcripts. b. both high school and college english credit. c. high school social studies credit. d. credit for two high school english classes

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