Yes, it is correct

No, because in step 5 the 5.25 should be 6.12

No, because in step 4 the 5.67 should be 1.62.

No, because in step 2 only the x should be multiplied by 1.08.

Yes it is correct No because in step 5 the 525 should be 612 No because in step 4 the 567 should be 162 No because in step 2 only the x should be multiplied by class=