Find the percent change from $20 to $25? show steps

Nnnnneeedd 1.find the residual if you know the actual number is 5.2 and the predicted value is 4.8

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Ifurniture stores having a weekend sale and is offering 20% discount on patio chairs and table the sales tax on furniture is 6.25 using function composition how can you represent the total amount a that you would need to pay for this furniture that cost x dollars