I don’t really know how to do this and need help

3,550,000

Explanation:

3 significant figures is a number which has 3 figures

and zeros ( zero is not a figure )

3550,000

Explanation:

Rounding rule:

If > 5 enter one

If < 5 rounding

Note:

< = less than

> = greater than.

Solve:

Base on the given:

it < 5 rounding

Thus,

3545,530 ≈ 3550,000

~Lenvy~

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.