Use the graph to answer the question. The graph shows the relationship between the time and the speed of a train that has already left the station.
Train Speed
Speed (miles per hour)
100-
90-
80+
70
60-7
50+
40
30
20
10
0
10 20 30 40 50 60 70 80 90 100
Time (minutes)
During which time period was the train traveling at a constant speed?
O B. between 20 and 40 minutes
O A between 0 and 20 minutes
Oc between 40 and 60 minutes
O D. between 60 and 80 minutes

Answer this question, only if you know the answer. 30 points and brainliest!

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

Carla was trying to decide what to do saturday evening. she has $100 available to spend for the evening. she has narrowed her choices down to these events: braves game, a concert of an artist she likes, or the georgia aquarium. admission to the braves game is $25, hot dogs cost $10, sodas cost $5. the concert costs $25 for admission, $20 for a souvernir t-shirt, and $10 for a soda. the georgia aquarium has the show of a lifetime with an all you can eat and drink that costs $100. carla does not want to take any driving chances, so in addition to the cost of the aquarium, she will also need to pay for her uber/lyft, which is $15 each way. which option should carla choose if she wants to spend the least? based on that choice, what then is carla's oppotunity cost? fully explain your answer in at least one paragraph.