ANSWER
A) -1
EXPLANATION
The average rate of change of the given quadratic function on the interval 0 ≤ x ≤4 is the slope of the secant line connecting the points (0,f(0)) and (4,f(4)).
That is the average rate of change is:

From the graph, f(0) is 0 and f(4) is -4.
We plug in these values to obtain;

This simplifies to;


Hence the average rate of change for the given quadratic function whose graph is shown on 0≤x≤4 is -1
2x - 45 = x +4
Add 45 to each side:
2x = x + 49
Subtract 1x from each side:
x = 49

Hence, on the sales of Rs. 20000, Manas will receive a commission of: Rs. 1538.46
Answer:
a red
Step-by-step explanation:
A bag contains 7 red marbles, 5 blue marbles, and 2 green marbles. What is the probability of choosing a blue marble when one marble is drawn?
Answer:
Step-by-step explanation:
y ≤ 5x - 1
- 5x + y ≤ - 1
5x - y ≥ 1