The probability a person is infected by a certain cold virus is 0.20. If a random sample of 8 people is taken, what is the probability that at least one person will be infected by the cold virus? a. 0.0687
b. 0.9313
c. 0.1678
d. 0.8322

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.

Is (root2 -2)^2 rational or irrational. show the steps and answer fast

The mountain springs water company has two departments, purifying and bottling. the bottling department received 67,000 liters from the purifying department. during the period, the bottling department completed 65,000 liters, including 3,000 liters of work in process at the beginning of the period. the ending work in process was 5,000 liters. how many liters were started and completed during the period?