Find the slope of the line passing through the pair points (7,6) and (-7,-6)

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

If you could answer these your a life saver

Abakery recorded the number of muffins and bagels it sold for a seven day period. for the data presented, what does the value of 51 summarize? a) mean of bagels b) mean of muffins c) range of bagels d) range of muffins sample # 1 2 3 4 5 6 7 muffins 61 20 32 58 62 61 56 bagels 34 45 43 42 46 72 75