Let f be a function such that f(x)=2x-4 is defined on the domain 2< =x< =6. the range of this function

a.0< =y< =8
b.0< =y< 00(infinity)
c. 2< =y< =6
d.-00

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.