The number of appetizers that Liz would have learnt after 4 weeks given the unit rate is 20.
The first step is to determine the unit rate of appetizers that Liz learns.
Unit rate = total number of appetizers / total number of weeks
10 /2 = 5 appetizers
Number of appetizers Liz would learn in 4 weeks = 4 x 5 = 20
To learn more about division, please check: https://brainly.com/question/194007
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