Teresa is walking. D(t), given below, is her distance in kilometers from Glenn City after t hours of walking. D(t) = 10.4 - 4t

a) Which statement best describes D^-1(x)?
a. The amount of time she has walked (in hours) when she is x kilometers from Glenn City
b. The reciprocal of her distance from Glenn City (In Kilometers) after walking x hours.
c. Her distance from Glenn City (in kilometers) after she has walked x hours.
d. The ratio of the amount of time she has walked (in hours) to her distance from Glen City (in kilometers) x.

b) D^-1(x) =

c) D^-1(5.2) =

2.12 school absences. data collected at elementary schools in dekalb county, ga suggest that each year roughly 25% of students miss exactly one day of school, 15% miss 2 days, and 28% miss 3 or more days due to sickness.61 (a) what is the probability that a student chosen at random doesn’t miss any days of school due to sickness this year? (b) what is the probability that a student chosen at random misses no more than one day? (c) what is the probability that a student chosen at random misses at least one day? (d) if a parent has two kids at a dekalb county elementary school, what is the probability that neither kid will miss any school? note any assumption you must make to answer this question. (e) if a parent has two kids at a dekalb county elementary school, what is the probability that both kids will miss some school, i.e. at least one day? note any assumption you make.