00:01
In this video, we're going to be covering real numbers in their properties.
00:04
In particular, we're going to be plugging in real numbers into a formula and using order of operations to solve the formula.
00:10
So if we look at the screen here, i've written down the formula for bac, which determines the alcohol concentration in your blood.
00:17
In order to determine this, you're going to multiply the total number of ounces drinking of alcohol times the percentage of alcohol concentration in the drink times the constant 0 .075, which is always going to be in the formula, divided by the body weight of the person drinking in pounds minus hours drinking times another constant, which is always in the formula, 0 .015.
00:39
All right, so for the total number of ounces drinking, and the problem, they may give you the ounces of one particular drink.
00:46
So for example, they may give you, they may say a beer has 12 ounces of liquid in it and a man drank four of them.
00:54
So you'll multiply four times 12 and get 48.
01:01
And then they're going to give you the percentage of alcohol in each beverage.
01:05
And so you can just leave the percentage as it is.
01:08
3 .2, you do not change into a decimal.
01:11
However they give it to you and the word problem is how you plug into the formula.
01:15
Then they're going to give you a constant, well, then the, sorry...