ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos


PSAT Videos 97 videos

PSAT 1.8 Math Diagnostic
211 Views

PSAT 1.8 Math Diagnostic. What is one value of x?

PSAT 1.38 Math Diagnostic
180 Views

PSAT 1.38 Math Diagnostic. What is f(g(x))?

PSAT 1.37 Math Diagnostic
177 Views

PSAT 1.37 Math Diagnostic. Which of the following forms of the function f(x) would best reveal the number of employees that should be hired to maxi...

See All

PSAT 1.15 Math Diagnostic 176 Views


Share It!


Description:

PSAT 1.15 Math Diagnostic. Which function represents the GDP of South Asia at time t for t equals 15?


Transcript

00:00

Thank you We sneak And here's your shmoop douceur brought

00:06

to you by the gross domestic product since it's such

00:10

a big deal to economists you'd think they could have

00:12

won first Alright gross domestic product or gdp is often

00:18

uses a measure of the health of an economy In

00:21

two thousand fifteen the gdp of the south asia region

00:24

is and economists predict that the gdp of south asia

00:28

will grow by an average of seven point three percent

00:30

annually from two thousand fifteen to two thousand thirty Which

00:34

function represents the gdp of south asia over those fifteen

00:38

years All right near the potential answer Alright when a

00:43

season who do these economists think they are No through

00:46

thomas if you're so good at predicting things economist who's

00:50

gonna win the world series next year to know seriously

00:53

we're going to vegas next weekend and we got a

00:55

condo that's burning a hole in our fight All right

00:57

so we're looking at an exponential function here We know

01:01

this because we're given a certain amount in this case

01:03

an unknown amount and that's expected to increase it a

01:07

set rate over a period of time just like are

01:10

totally solid investment in scratch off lottery tickets didn't work

01:14

out so well the formula for an exponential function is

01:17

why equals a times one plus are in parentheses Who

01:23

the x power Where is the initial amount Our is

01:27

the growth rate expressed is a decimal and x is

01:30

the number of intervals All right well in this problem

01:33

and will be r a so it's a little letters

01:37

which route They're also Since our intervals air being measured

01:40

in time namely an increase of seven point three percent

01:43

each year we can place our acts with a t

01:46

for time Our rate of growth of seven point three

01:48

percent which expressed as a testimony is point zero seven

01:52

three So why equals end times one plus point Oh

01:56

seven three in parentheses through the power of tea Of

02:01

course this problem wants the equation and fancy function form

02:04

so we'll change our y two f t and we're

02:07

left with something that looks an awful lot like option

02:10

c In fact it looks exactly like option c so

02:14

that's when we're going to go with now let's see

02:16

what we can do about making that gross domestic product

02:18

a little less gross That maybe some of makeup a 00:02:21.563 --> [endTime] haircut mani pedi you

Related Videos

Secret Ingredients
391 Views

PSAT 1.3 Math Narrative Walkthrough. How many full packages of secret ingredient does the company have to buy to make one 50-gallon batch?

PSAT 1.1 Reading Diagnostic
1006 Views

PSAT 1.1 Reading Diagnostic. The main purpose of the first two paragraphs is to...what?

PSAT 2.2 Reading Diagnostic
379 Views

PSAT 2.2 Reading Diagnostic. What is the main rhetorical effect of this phrase in the second paragraph?

PSAT 1.3 Writing Diagnostic
282 Views

PSAT 1.3 Writing Diagnostic. To make the paragraph most logical, sentence 2 in the second paragraph should be placed...where?

PSAT 1.4 Writing Diagnostic
239 Views

PSAT 1.4 Writing Diagnostic. Which choice most effectively combines the two sentences in the underlined portion?