Suppose the least-squares regression line for a set of data has slope 72.4. Now suppose we remove a point from the data, compute the least-squares regression line, and find that the new slope is 8.7. The point removed would be considered:

3. mr. sanchez’s class sold fruit pies for $1.65 each and mr. kelly’s class sold bottles of fruit juice for $1.36 each. together, the classes sold 79 items and earned $118.17 for their school. (a) write and solve a system of equations that model the problem. show all your work. (b) which class earned more money? (c) how much more money did that class earn?