The Sweater Shack is offering a 20% discount on sweaters. If the regular price of a sweateris $15.00, what is the discount? /The
1 answer:
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Given:
The rule of input and output function is:
To find:
The answer if we put 19.
Solution:
Consider the input and output function is:
Substitute , we get
Therefore, the required answer is 6.