Part a: subtract 48-30=18
Part b: i found it by subtracting 48 -30 because it says left over
Oh okie so I Pepeooooo oit the way
The mean of a frequency distribution is given by
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This answer would be 21 because you’d just do 15 increased by 40% which gave me 21
The graph would be a compressed inside down U shape
(-7,45) (-6,48) (-5,49) (-4,48) (-3,45)