what is the measure of minor arc be?

A full circle is 360 degrees.

Each segment in the picture is given a degree except for DE,

To find DE subtract all the given degrees from 360:

DE = 360 - 40 - 30 - 20 - 90 - 110 = 70 degrees.

Now to get BE add:  BC + CD + DE

BE = 30 + 40 + 70 = 140 degrees.

2

step-by-step explanation:

f(x) has value 150 at x= 0

and 0 at x= 3

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