What was the upper quartile of the class sizes?

26

Step-by-step explanation:

The upper quartile is the value at the right side of the box, that is

upper quartile = 26

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

c - they will have the same distribution

step-by-step explanation:

this is the only one that could make sense. : )