Answer B is correct. Sum is the answer to an addition problem, so sum of 8 and 2 would be 8+2.
No because each time it goes up by (1) and in the last one it goes up (2 times) and then decreases (4 times) on the right.
Answer:the correct answer is D
Step-by-step explanation:
Hope this help but can you tell me what your answer?
So we know that an average is the sum of the scores divided by the number of scores that were added together. In this case we are going to be dealing with 4 tests. So let's say x is the score for our fourth test. We can create this equation:

So then we need to simplify the top:

Then multiply by 4 on both sides to get rid of the denominator:

Then solve for x:

So now we know that Sam needs to score a 67 on the fourth test to have an average score of 50.