A. -1/4(x-10)^2
The screenshot shows the graph
Answer is C.
12 servings 9 servings
----------------- = ---------------
2tsp vanilla ? tsp vanilla
90 is the outlier
for future reference, outliers are numbers much larger or much smaller than the other numbers in a set
for example
2,3,4,21,6
or 90,87,94,12,99
427.0 mm is more precise.
feel free to ask any questions