Astudy 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 530.53 sample slope 2.83 a particular observed value from the data is: x- 30, y -607.89 calculate the residual of this observed value of the response variable. give your answer to 2 decimal places. residual-