Normally you would only solve by completing the square if a is 1 and b is even. But the answer would be half of b. So half of 9 is 4.5 or 4(1/2).
309 times 692 ***********************
Answer: A. 42 tickets
Step-by-step explanation: 8, 16, 24, 32, 40, 48
72. Explanation: 36+72=108.
