- What is the vertex of the parabola f(x) = -5x^2+4x+1?

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How Not Gate converts Zero into One , if there is no voltage? Explain significance of Raman Effect for imaging in future? Flowrate 7570 ltrs/min of H2O w/ Cl conc 6000mg/liter.Mix w/NaOH forms NaCl salt.What conc (M) of NaOH & how many ltrs needed at that conc? Explain why f(f^-1(x))=f^-1(f(x))=x? According to projectile motion project (ruler and 2 pennies), which penny was is in free fall?