Question

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

Answer 1

`\\ \sf\Rrightarrow 3545530`

`\\ \sf\Rrightarrow 354553`

`\\ \sf\Rrightarrow 35455`

`\\ \sf\Rrightarrow 3545`

`\\ \sf\Rrightarrow 355`

Answer 2

Step-by-step explanation:

To round the number to 3 significant figures, look at the first 4 digits: 3545 which will round to 355. The number in 3 significant figures will be 3,550,000.