Answer:
b. 3.532×10^-4
Step-by-step explanation:
If you have: 0,0003532
you have to put the comma 4 positions to the right in order to get the number "3,532"
Then you can to express the number in scientific notation like 3.532×10^-4
which means that to return to the original number you must run the comma 4 positions to the left.
