What polynomial has a graph that passes through the given points? (-2, 2) (-1, -1) (1, 5) (3, 67) a. y = -x3 + 4x2 + 2x - 2 b. y = x3 + 4x2 + 2x - 2 c. y = x4 + 4x3 + 2x2 - 2x d. y = x3 - 4x2 - 2x - 2

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