Atrain arrives at a station and waits 2 min before departing. another train arrives at the station 18 minutes later, repeating the cycle. identify the probability that a train will be at the station when you arrive.

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27