Is the y-value of the vertex of the parabola that models the data?

The frequency table shows the results of a survey comparing the number of beach towels sold for full price and at a discount during each of the three summer months. the store owner converts the frequency table to a conditional relative frequency table by row. which value should he use for x? round to the nearest hundredth. 0.89 0.90 0.92 0.96

What is always true about a positive integer raised to a negative odd power?

Is (0,0) a to ? ys x2 - 4 y> 2x-1