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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...
PSAT 1.15 Math Diagnostic 176 Views
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Description:
PSAT 1.15 Math Diagnostic. Which function represents the GDP of South Asia at time t for t equals 15?
More Video DetailsTranscript
- 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
Full Transcript
- 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
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