X axis (-40,0)
y axis (0,15)
Answer:
sub in 10 for x. -10-4=-14
Step-by-step explanation:
1. Mean.

2. <span>Standard deviation.
First we have to square each value and calculate the mean of that squares:

so the variance:

and the standard deviation:

</span>
His percentage of change in the amount of quarts is 82.22%.
Initial amount of lemonade = 45 quart
End amount of lemonade = 8 quart
Change in amount = 45 - 8
= 36
Percent = 
= 
= 0.8222 * 100
= 82.22%
Hence, his percentage of change is 82.22%.
To learn more about percentage here:
brainly.com/question/28269290
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