The bar graph shows the number of students who earned each letter grade on an exam. Which statement about the graph is true? 1/5 of the students earned a C.

3% more students earned an A than a B.

20% of the class earned a D.

1/4 of the class earned a B

  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).

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !