List the key features of the quadratic function y = x2 + 6x – 16. Question 5 options:

A)

x-intercepts: (–8,0) and (2,0), y-intercept: (0,–16), vertex: (–3,–25).

B)

x-intercepts: (8,0) and (–2,0), y-intercept: (0,–16), vertex: (–3,–25).

C)

x-intercepts: (–8,0) and (2,0), y-intercept: (0,–6), vertex (–3,–25).

D)

x-intercepts: (–8,0) and (2,0), y-intercept: (0,16), vertex: (–3,–25).

At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. wind speeds below 1000 cm/sec deposit sand and wind speeds above 1000 cm/sec move sand to new locations. the cyclic nature of wind and moving sand determines the shape and location of large dunes. at a test site, the prevailing direction of the wind did not change noticeably. however, the velocity did change. fifty-nine wind speed readings gave an average velocity of x = 1075 cm/sec. based on long-term experience, σ can be assumed to be 245 cm/sec. (a) find a 95% confidence interval for the population mean wind speed at this site. (round your answers to the nearest whole number.) lower limit cm/sec upper limit cm/sec