I know the answer isn't C or D. A or B both seem likely until you see that B involves a 'comma without a conjunction,' either way you should never put a comma before 'and'; I am not sure why but I am pretty sure this only applies in a formal document. So your answer is A.
*This is a maths problem.
Answer:
-2
Explanation:
Average rate of change of the function from x = -3 to x = 1 can be calculated using the formula below:

Where,
(from the graph, when x = -3, y = 1)
(from the graph, when x = 1, y = -7)
Plug in the values into the formula:



Average rate of change from x = -3 to x = 1 is -2.
Answer:
Yes English is important. English is the current lingua Franca, it’s used in international trade and foreign affairs.
learning English opens the widow of opportunity to many jobs and will improve your future tremendously.
Learning English can help the Filipino nation engage in foreign business and economy help propel the country forward.
Explanation: