You and your friend play a video game. You have a final score of 40 points, and your friend has a final score of -21 points. By how many points did you win?

You would have won by 61 points.

Step-by-step explanation:

Since you have 40 and your friend has -21 the equation would be:

40 - (-21) = ?

Since its two negatives you change it to a positive and so it reads

40 + 21 = 61

the difference between the 40 and -21 is 61

  b.   the average rate of change of f(x) is less than the average rate of change of g(x).

step-by-step explanation:

since the length of the interval is the same in each case, we only need to compare the change in y-value to see which is greater.

so the change in y-value for function f is (6 )) = 9.

the table tells us

so the change in y-value for function g is (31 -1) = 30.

the change in y-value of f(x) on the interval is less than the change in y-value of g(x) on the same interval, so the average rate of change of f(x) is less than the average rate of change of g(x).