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PSAT 1.22 Math Diagnostic 175 Views
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Description:
PSAT 1.22 Math Diagnostic. Which of the following functions f represents the total cost in dollars for a stay of x nights?
More Video DetailsTranscript
- 00:00
Thank you We sneak And here's your smoke Do sure
- 00:05
Brought to you by hotel fees Yes you did Just
- 00:08
spend eight dollars on an almond joy Jasmine is planning
- 00:13
a vacation for her parents hotel she's book cost one
- 00:16
hundred ten bucks a night plus hotel tax of seven
Full Transcript
- 00:18
point five percent It also charges a flat fee of
- 00:21
thirty five bucks for parking also subject in seven point
- 00:24
five percent tax which of the following functions represents the
- 00:27
total cost in dollars for a stay of ex nights
- 00:30
and hear the national anthem next All right where to
- 00:35
the wise if you're ever looking into staying at a
- 00:36
hotel and they list some of the charges as x
- 00:39
or why maybe see if there's a motel six or
- 00:42
a marriott courtyard in the area Otherwise we have a
- 00:44
feeling you're about to get home All right so what
- 00:47
do we have here Well we're using x to represent
- 00:50
the length of jasmine stay in days and we know
- 00:52
that it's one hundred ten bucks per night plus a
- 00:54
seven point five percent tax So for starters we should
- 00:57
figure out how much it costs for a single night's
- 01:00
stay well Seven point five percent could be rewritten in
- 01:03
decimal formas point seven five let's Multiply that by hundred
- 01:06
ten and we get eight dollars and twenty five cents
- 01:09
Remember that's on top of the base price So we
- 01:11
have to add it back to one hundred ten and
- 01:14
looks like it'll cost jasmine one hundred eighteen dollars Twenty
- 01:17
five cents to stay in the hotel each night We
- 01:20
then have to multiply that by the number of nights
- 01:22
So we get one hundred eighteen point two five x
- 01:25
Well that only shows up in options b and c
- 01:27
So it looks like we can kick the other two
- 01:29
posters to the curb Alright Next It says there's A
- 01:32
thirty five dollars flat fee for parking that's Also subject
- 01:35
to the seven point five percent tax How rump Some
- 01:38
flat feet Okay so let's do the same thing with
- 01:41
thirty five bucks that we did with one hundred ten
- 01:43
thirty five times point seven five two point sixty five
- 01:47
added to the thirty five Thirty seven point six two
- 01:49
five Which means that option c f of x equals
- 01:52
a hundred eighteen point two five x plus thirty seven
- 01:54
point sixty five Gets it Exactly right It's like jasmine
- 01:58
just found out that there's also a five dollars per
- 02:00
used bath towel charge You know you Just took a 00:02:03.86 --> [endTime] shower Jasmine Keep it clean
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