15.Which of the followings represents the sum of four consecutive odd integers? a. x + (x + 1) + (x + 2) + (x + 3)
b. x + (x + 1) + (x + 3) + (x + 5)
c. x + (x + 2) + (x + 3) + (x + 4)
d. x + (x + 2) + (x + 4) + (x +6)

Axel follows these steps to divide 40 by 9: start with 40. 1. divide by 9 and write down the remainder. 2. write a zero after the remainder. 3. repeat steps 1 and 2 until you have a remainder of zero. examine his work, and then complete the statements below.