What is the margin of error for a sample statistic for a population with a standard deviation of 7.75?

Which polynomial function has x intercepts -1, 0, and 2 and passes through the point (1, -6)

These tables represent a quadratic function with a vertex at (0, -1). what is the average rate of change for the interval from x = 9 to x = 10?

What is the area of the original rectangle? 8 cm² 20 cm² 25 cm² 40 cm²