Which quadratic function is represented by the graph?
f(x) = - 1/3(x + 3)^2 + 3
f(x) = -1/3( x -3)^2+ 3
f(x) = -3(x + 3)^2+3
f(x) =-3(×-3)^2+3

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step-by-step explanation:

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180°

step-by-step explanation:

sum of equilateral triangle=180°

< n=60°

< m=120°°[angle supplementary of equilateral angle]

< m+< r+< x=360°(sum of exterior angle of triangle)