10. A study by Gordyville CC administrators found a linear relationship existed between the cost of textbooks ($) and the number of credit hours the student was taking. Below is the equation for the line of best fit for these data. cost = 24.38 x (#hours) - 58.37 (a) Interpret the slope of the line in the context of the data. (b) A particular student enrolled in 13 credit hours and had a residual textbook cost of -6.57 dollars. How much did the student spend for textbooks? (c) Is the correlation coefficient positive or negative for these data? Justify. (d) Does the y-intercept have meaning in the context of these data? Explain