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PSAT Math Diagnostic Videos 41 videos

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PSAT 1.1 Math Diagnostic. If a rabbit consumes 3 meals a day, how many grams of food will a rabbit consume in 7 days?

PSAT 1.10 Math Diagnostic
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PSAT 1.10 Math Diagnostic. Which of the following is a factor of the expression?

PSAT 1.3 Math Diagnostic
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PSAT 1.3 Math Diagnostic. Which of the following most nearly represents the line of best fit?

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PSAT 1.40 Math Diagnostic 170 Views


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Description:

PSAT 1.40 Math Diagnostic. According to the equation, which of the following statements is accurate?


Transcript

00:00

Sorry And here's your smoke du jour Brought to you

00:04

by swimming pools There's a small rundown public school we

00:07

go to sometimes but it's kind of a dive splash

00:12

the local pool love opens with a thousand members at

00:15

the beginning of the summer The number of members m

00:18

after tea months can be calculated with the equation and

00:21

nichols a thousand times point nine five to the t

00:23

kaur according to the equation which of the following statements

00:26

is accurate and hear the potential answer all right are

00:31

under increasing or decreasing that's they face Okay we'll splash

00:36

What a clever name for a pool club was like

00:38

water taken Anyway they must be doing something right because

00:42

they got a thousand members to sign up right out

00:44

of the gate Or you know right off the starting

00:46

block now were given an equation that expresses how many

00:49

members there are after a certain amount of time where

00:52

t represents time and equals the number of months Right

00:56

So it's team months all the answer choices look pretty

00:58

similar So the only thing we need to do is

01:00

figure out whether membership is going up or down and

01:02

by what percentage Why they signed up or why they

01:05

left is well none of our business So let's Plug

01:08

in a one for tea and see what happens Well

01:11

point nine five two the first power is just point

01:13

nine five it doesn't change and once we multiply that

01:16

by a thousand we get nine hundred fifty which is

01:18

a decrease of fifty members Find out how much of

01:21

a percent decrease that is We simply take fifty and

01:24

divided by the thousand we started with and we get

01:27

point Oh five or five percent sure appears to be

01:30

option c to us But let's try plugging it in

01:32

one more to make sure what's membership gonna look like

01:35

after two months while we can plug into for tea

01:38

Point nine five square in his point nine o two

01:40

five which one multiplied by a thousand equals nine hundred

01:43

two and a half that's forty seven and a half

01:45

fewer members than there were the month before And each

01:48

We're a little concerned about that half member How sharp

01:51

are those diving boards Well if we take forty seven

01:53

point five and we divide that by the number of

01:55

members there were at the end of one month nine

01:58

fifty We had point oh five or five percent once

02:01

again so yeah option c definitely got it right We'll

02:04

tell you who doesn't have it right This pool club

02:07

Apparently we're not sure what they're doing to drive people

02:10

away in such large numbers but it might have something

02:12

to do with their idea to introduce marine life and 00:02:14.94 --> [endTime] do some of the pools

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