I NEED THIS ASAP!!

Mr. Williams is struggling in German and really wants to do well fourth quarter so that his overall average for the school year is a 65%. First quarter he earned a 58%, second quarter he earned a 68%, and third quarter he earned a 67%. What grade must Mr. Williams earn fourth quarter to have an overall average of 65% for the four quarters?

65%
66%
67%
68%

65%

If you look at it its the only number in the center of all the numbers if you round properly

  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).