Answer:
0.0028
Step-by-step explanation:
move the decimal point to the left (if the exponent of ten is a negative number), or to the right (if the exponent is positive)
Reason:
The exponent is 3, which means we move the decimal point 3 spaces to the right to go from 2.8 to 2800.0 or simply 2800
If the exponent was negative, then you move that many spaces to the left.
