00:01
Okay, given d of x equals 2x plus 4, 2x plus 24, when x equals 6, we've got d of 6 equals 2 times 6 plus 24, which is simply 12 plus 24, which is the same thing as 36.
00:15
Now, when x equals 8, d of 8 is 2 times 8 plus 24, which is 16 plus 24, which is 40.
00:22
D of 10, now you can kind of see the pattern.
00:25
We're adding four each time, so we know it's going to be 44.
00:28
But to do the math, you know it's 2 times 10 plus 24, which is 20 plus 24, which is 44.
00:33
D of 12, we know is 2 times 12 plus 24, which is 48.
00:39
We're just adding for each time.
00:41
Okay.
00:42
Now, for part b, they've said, find the function that converts european dress sizes to u .s.
00:48
Dress sizes.
00:48
Okay...