Im not sure how to write the formula so if you could please show that. Thanks

4. Using If function, determine Alternative Bonus for each month Page 1 Alternative Bonus (Row 27): If Sales is greater than or equal to Sales Plateau for Bonus Assumption, 100% of Bonus Assumption will be given; if Sales is greater than or equal to 80% of Sales Plateau for Bonus Assumption, 60% of Bonus Assumption will be given. If Sales is greater than or equal to 60% of Sales Plateau for Bonus Assumption, 50% of Bonus Assumption will be given. Otherwise, no bonus will be given