The National Math and Science Initiative (NMSI) has recently begun a controversial program in which high school students are paid cash incentives for passing an end-of-year standardized test. Suppose we conduct a similar study, in which end-of-year test scores (y) are measured on a scale of 0-100 and the amount of the cash incentive offered to the student (x) is measured in dollars from $0 to $500. The regression equation is: Score = 67.51 +0.0148 x Cash. Which of the following is the best interpretation of the slope? For each additional dollar offered to students, their scores increase by 0.0148 points, on average. For each additional dollar offered to students, their scores increase by 67.51 points, on average. For each 67.51 additional dollars offered to students, their scores increase by one point, on average. For each 0.0148 additional dollars offered to students, their scores increase by one point, on average