1. Suppose that the amount of algae in a pond doubles every 4 hours. If the pond initially contains 90 pounds of algae, how much algae will be in the pond after 12 hours? (1 point)
720 pounds
360 pounds
1,440 pounds
114 pounds
2. What is the order of 1.5 × 103, 1.4 × 10–1, 2 × 103, and 1.4 × 10–2 from least to greatest? (1 point)
1.4 × 10–2, 1.4 × 10–1, 1.5 × 103, 2 × 103
1.4 × 10–1, 1.4 × 10–2, 2 × 103, 1.5 × 103
2 × 103, 1.5 × 103, 1.4 × 10–1, 1.4 × 10–2
2 × 103, 1.4 × 10–2, 1.5 × 103, 1.4 × 10–1

Question

1.   Suppose that the amount of algae in a pond doubles every 4 hours. If the pond initially contains 90 pounds of algae, how much algae will be in the pond after 12 hours?  (1 point)
720 pounds
360 pounds
1,440 pounds
114 pounds
2.   What is the order of 1.5 × 103, 1.4 × 10–1, 2 × 103, and 1.4 × 10–2 from least to greatest?  (1 point)
1.4 × 10–2, 1.4 × 10–1, 1.5 × 103, 2 × 103
1.4 × 10–1, 1.4 × 10–2, 2 × 103, 1.5 × 103
2 × 103, 1.5 × 103, 1.4 × 10–1, 1.4 × 10–2
2 × 103, 1.4 × 10–2, 1.5 × 103, 1.4 × 10–1

anonymous · Answer

1. 90^3. since 4 hours, and total of 12 hours. The second is A. You can find out simply with the last (or two) numbers and compare