The pattern of numbers below is an arithmetic sequence:

14, 24, 34, 44, 54,

which statement describes the recursive function used to generate the sequence?

the common difference is 1, so the function is f(n + 1) = f(n) + 1 where f(1) = 14.
the common difference is 4, so the function is f(n + 1) = f(n) + 4 where f(1) = 10.
the common difference is 10, so the function is f(n + 1) = f(n) + 10 where f(1) = 14.
the common difference is 14, so the function is f(n + 1) = f(n) + 14 where f(1) = 10.

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