The list below describes some events which took place at different periods in the geologic time scale. Birds appear.
Mammals appear.
Sea reptiles become extinct.
Which of these best orders the events from the earliest to the most recent?
1, 3, 2
1, 2, 3
2, 1, 3
2, 3, 1

1. the community center is putting on a play. there are several things the crew has to create for the scenery. (a) they spent $6.17 on each of 4 poster boards. how much did they spend on poster boards in total? show your work. (b) they spent $200.20 total on new lighting. each of the four lights cost the same amount. how much did they pay per light? show your work. (c) if the total budget was $300, how much more can they spend? show your work.