The scatter plot below shows the relationship between the number of pets that people have and
• the average amount they spend at the pet store each month. Based on the equation of the trend line, how much would you expect someone who has 9 pets to spend at the pet store each month?
1.$200
2.$225
3.$260
4.$300
The trend line for the scatter plot is y = 20x + 80, where y represents the average amount spent at the pet store and x represents the number of pets.
If someone has 9 pets, we can plug x = 9 into the equation to find out how much they would be expected to spend:
y = 20(9) + 80
y = 180 + 80
y = 260
Therefore, someone who has 9 pets would be expected to spend $260 at the pet store each month.
So the answer is 3. $260.