(a) The approximate equation of the line of best fit is y≈2x+10.
(b) Using this equation, the predicted money spent on entertainment for a student who works 10 hours is $30.
(a) To approximate the equation of the line of best fit, you can visually inspect the scatter plot and determine a linear relationship between the number of hours worked (x) and the amount of money spent on entertainment (y). In this case, the approximate equation y≈2x+10 suggests a positive correlation, where for every additional hour worked, the money spent on entertainment increases by approximately $2, with a base spending of $10.
(b) Using the equation y≈2x+10, you can predict the amount of money spent on entertainment for a student who works 10 hours. By substituting x=10 into the equation, you get y≈2×10+10=30. Therefore, the prediction is that a student who works 10 hours would spend approximately $30 on entertainment, based on the linear relationship observed in the data.