17.3 million smartphones were sold in 2009
Answer:

Subtract 2 from both sides:


Multiply 4 to both sides:


Answer:
Step-by-step explanation:
bb, ,llllllllllllllllllllllllllll
Answer: a. 6 rows 6 people per row, 9 rows 4 people in each row, 36 rows 1 person per row, 18 rows 2 people per row, 12 rows 3 people per row, 9 rows 4 people per row
Step-by-step explanation: 4 rows 9 people, 3 rows 12 people
X = -3 because i just made a lucky guess