00:01
Let's see where we might have went wrong here.
00:02
So the price percent changes the amount of change.
00:08
So we're increasing from $6 .89 to from $5 .99 compared with the $5 .99 that we started with.
00:20
So let's see what that would look like.
00:27
$6 .89 minus $5 .99 would be a change of 0 .9 or 90 cents compared to where started at 599 and i don't know what you need to write to but or how many decimal places but it's a 15 .03 % or about a 15 % increase so i'm not sure how you calculate it'll let's look at b the cost of the haircut decreased so it's now 799 it was 1399 so you always compare the to for the difference, which this case went down.
01:22
And you compare with always where it started.
01:24
How much did it change compared to where it started? so 799 minus 1399.
01:32
It changed by six compared to it starting at 1399, which would be about negative 43.
01:47
So about a negative 43 % change.
01:58
The cost of an oil change increased, and i don't know if, like, in part b, you include the negative, actually, because it's still a 43 % change.
02:14
I'm not sure if you include the negative in your answer or not, but it should be 43%, not 75%.
02:23
In c, it increased to 243 .99 from 39 .95.
02:30
So it's now 43 .99 from the 3995 that it started, and you compare that always to the start.
02:40
How much did it change compared to what did it start at? and so 4399 minus 3995 compared to 3995 is 0 .101, so about 10 .1%.
03:05
If it's to the nearest percent, i would say 10.
03:16
And finally, a new car was reduced to 22959 from 24 -899.
03:26
How much did it change? this went down...