00:01
For this problem, we're discussing how much the government had collected in taxes.
00:06
So it looked like in 2016, $5 ,712 was collected per person.
00:12
Now we're telling that the population was $323 million, so we want to see how much altogether was collected by the government.
00:19
So in order to solve this, we're going to start by moving things into scientific notation.
00:24
So as a reminder, scientific notation is a times 10 to the end, where that number a has to be greater than or equal to one, but strictly less than 10.
00:32
So i'm going to move the decimal points so that the a is found there.
00:36
So for 500, 5 ,712, i'm going to move the decimal point between the 5 and the 7, because now i have 5 .712, and that's found between 1 and 10.
00:45
For the 323 million, i'm going to move it between the 3 and the 2.
00:49
So again, i have 3 .23, which is between 1 and 10.
00:53
So i need to now figure out what the exponent is for the 10.
00:58
So this becomes 5 .712.
01:01
Times 10 to the, well, how many times the decimal point move? it moved to the left, one, two, three spots.
01:09
Since i'm moving it to the left, it's going to be a positive number.
01:12
For the number on the right here, i got 3 .23 is going to be my number.
01:17
I'm going to drop all those zeros.
01:18
And then i'm going to write my ex -bone to get it starts here.
01:22
It's going to move 3, 6, and then 7, 8.
01:25
So this is going to be 3 .23 times 10 to the 8.
01:29
My next step is to go ahead and multiply out the two numbers.
01:33
So i'm going to do 5 .712.
01:36
I'm going to go ahead to rearrange things a little bit while i do it because i can put it...