5(2i+4) - i = 38
distributive property

9514 1404 393

  i = 2

Step-by-step explanation:

The outside factor multiplies each term in parentheses.

  5(2i +4) -i = 38

  10i +20 -i = 38 . . . . eliminate parentheses

  9i +20 = 38 . . . . . . collect terms

  9i = 18 . . . . . . . . . . subtract 20

  i = 2 . . . . . . . . . . . . divide by 9

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.

c) yes, because of asa or aas