The graph below plots a function f(x): graph of line segment going through ordered pairs 0, 100 and 3, 220 if x represents time, the average rate of change of the function f(x) in the first three seconds is

Average rate of change of a line is its slope.

To find slope we can use the formula:

Where,

For our problem,

Now, let's find slope.

So, the average rate of change of the function f(x) int he first three seconds is 40.

ANSWER: 40

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

yes

step-by-step explanation: