Answer:
i and iii
Step-by-step explanation:
In the metric system, you give a name to the following multiples: 10, 100, 1000, 0.1, 0.01, 0.001, and then you skip three places. So, you have

And thus 0.000001 of something is a micro-something (i.e. one millionth of a certain unit)
Answer:
1. 2.5 steps per second
2. 1.25 steps
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
10x+25 (expressions don't have equal signs)