What event led to 90 percent of women clothing workers being organized in New York City? A. The Homestead Strike B. The Supreme Court decision in re Debs C. The Pullman Strike D. The Triangle Shirtwaist factory fire

D

Step-by-step explanation:

vertex of the parabola

Step-by-step explanation:

v(t) = −2x²+ 22x + 280

v = value of her investment

t = time in weeks.

(a) What key feature of the function tells us when her investment was worth the most?

worth the most = highest value, so at the vertex of the parabola.

xvertex = -b/2a

yvertex = -Δ/4a