00:01
Okay, these are really nice substitution problems.
00:04
They just happen to be in function notation.
00:06
So you're given three functions, f, g, and h, and you want to find f of 8, g of half, and h of 4.
00:13
So you're literally just plugging in the 8, the half, and the 4 into the appropriate function.
00:19
So to find f of 8, you're going to take the 8 value and plug it into the f function function every time you see an x.
00:30
So to do this, this is negative 3 plus the square root of, let's say, 8 minus 3 is 5.
00:36
Square root of 5 isn't nice, so to me that problem is done.
00:40
Next problem, g of a half.
00:42
We're going to take that half and we're going to plug it into x in the g function.
00:49
So literally just substituting half of 6 is 3.
00:53
3 minus 10 is negative 7, and then the absolute value of negative negative 7 is positive 7.
01:00
So g of half is positive 7.
01:03
And then the last one, h of 4...