How do you calculate the residual? SHOW ALL WORK.

A study was conducted into the relationship between the age in years of a person and their average weekly after tax income.

You have been supplied with the following information regarding a regression model that had been developed as part of the study.

Regression analysis
sample intercept 852.39
sample slope 1.73
A particular observed value from the data is:

x = 22, y = 904.59

Calculate the residual of this observed value of the response variable. Give your answer to 2 decimal places.

residual =