Two cars on a long, straight freeway are approaching an exit, one from the south and one from the north. The table shows the distance between the cars as a function of the time after they are first observed. Find a
model that fits the data. How far south of the freeway exit was the northbound car when it was first
observed?

I NEED HELP WITH #4 & #5 & #7 PLEASE HELP ME PLEASE

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