The Coleman family is looking to rent a large truck for their upcoming move. With Amy's
Moving, they would pay $70 for the first day plus $3 per additional day. With Cedarburg
Rent-a-Truck, in comparison, the family would pay $16 for the first day plus $9 per additional
day. Before deciding on which company to use, Mrs. Coleman wants to find out what number
of additional days would make the two choices equivalent with regards to cost. What would
the total cost be? How many additional days would that be?

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