Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
Jaoquin buys 3 dozen lightbulbs. After changing the lightbulbs in his house, he has 15 lightbulbs left. How many lightbulbs did he use?
(3 points)
In order to find out how many lightbulbs Jaoquin used, we need to subtract the number of lightbulbs he has left from the number he bought.
Jaoquin bought 3 dozen lightbulbs, which is equivalent to 3 x 12 = <<3*12=36>>36 lightbulbs.
He has 15 lightbulbs left.
To find out how many lightbulbs he used, we subtract the number left from the number he bought:
36 - 15 = <<36-15=21>>21
Jaoquin used 21 lightbulbs.
To find out how many lightbulbs Jaoquin used, we first need to determine how many lightbulbs he started with.
One dozen is equal to 12 lightbulbs.
So, 3 dozen lightbulbs would be 3 x 12 = 36 lightbulbs.
Jaoquin started with 36 lightbulbs.
Now, to find out how many lightbulbs he used, we need to subtract the number of lightbulbs he has left from the starting amount.
Jaoquin has 15 lightbulbs left.
Therefore, he used 36 - 15 = 21 lightbulbs.
Jaoquin used 21 lightbulbs.