13. If PxQ=10, QxR=15 and PxR=54 than what is the value of PKQxR? a) 90
b) 49
c) 64
d) 81
e) 100​

The population of a small rural town in the year 2006 was 2,459. the population can be modeled by the function below, where f(x residents and t is the number of years elapsed since 2006. f(t) = 2,459(0.92)