Can somebody please help me answer these three questions!
1A. A roll of ribbon was 12 meters long. Diego cut 9 pieces of ribbon that were 0.4 meters long each to tie some presents. He then used the remaining ribbon to make some wreaths. Each wreath required 0.6 meters of ribbon. How much ribbon, in meters, did Diego have left over to make wreaths?
1B.How many wreaths could Diego make with this leftover ribbon?
2. Arianna went running for 0.75 hours and ran 5.55 miles. What was her speed, in miles per hour, if Arianna ran at the same speed for her whole run?
3.The Amazon rainforest covered 5.44 million square kilometers in 2014. In 2014, it covered only 0.85 times as much area as it covered in 1994. How much area, in millions of square kilometers, did the Amazon rainforest cover in 1994?