Answer:
MOS($) = $770 million
MOS (%)= 21.58% 
Step-by-step explanation:
Margin of safety (MOS) determines the amount by which expected sales exceeds the break-even point (BEP). 
MOS can be calculated as follows: 
MOS (units) = Budgeted sales - BEP 
MOS (%) = (Budgeted sales - BEP )/Budgeted sales × 100
MOS = $3,568 - $2,798 = $770 million
MOS (%) = (3,568 - 2,798)/3,568 × 100= 21.6% 
MOS ($)= $770 million
MOS (%)= 21.58%