Afreight train leaves a station and travels north at 40 mph. four hours later, a passenger train leaves on a parallel track and travels north at 80 mph. how long will it take the passenger train to overtake the freight train? how far from the station will they meet?

What is the volume of the sphere shown below with a radius of 3?

What is the length of the segment, endpoints of which are intersections of parabolas y=x2? 11 4 x? 7 4 and y=? 7 8 x2+x+ 31 8 ?

Acoffee shop orders at most $3,500 worth of coffee and tea. the shop needs to make a profit of at least $1,900 on the order. the possible combinations of coffee and tea for this order are given by this system of inequalities, where c = pounds of coffee and t = pounds of tea: 6c + 13t ≤ 3,500 3.50c + 4t ≥ 1,900 which graph's shaded region represents the possible combinations of coffee and tea for this order?