Answer:
The answer is D.
Sum means addition. So, you would be adding a and b. Remember this; a - b = difference, a * b = product, a ÷ b = quotient, and a + b = sum. Good luck!
1, 3, 9 and -1, -3, and -9 i guess
hope this helps
Answer:
The anwser is D.
Step-by-step explanation:
The equation must be greater or equal to eleven but less then or equal to 15.
