John and Dale want to find the mean time students in their class spent watching TV last week. So they each randomly select students in their class and ask for the times. The results are shown below (in hours). Use the data to answer the questions.

John's sample:
7, 10, 5, 11, 8
Dale's sample:
15, 20, 6, 7, 14, 10, 5, 18

What are the vertical asymptotes of the function f(x) =5x+5/x2 + x-2

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.