Question

how do i set this up some help please?

Answer 1

is it multiple choice

Answer 2

Image is way too big :S, can't see much other than a couple of words.

Answer 3

@Euler271

Answer 4

@helpme1.2

Answer 5

@iambatman that'sall thei nfo given to me

Answer 6

Can you type the problem out?

Answer 7

@iambatman will u be my fan

Answer 8

you want to find t when D = 11.4 trillion. twice the initial debt in 2000.

\[11.4 = 5.7(1.05^t)\]\[2 = 1.05^t\]\[the\ inverse\ of\ y = a^x\ is\ \log_a(y) = x\]we are solving for x (which is t in our case)

\[\log_{1.05}(2) = t\]do you know how to use a funky log base with your calculator?

Answer 9

not really

Answer 10

and alsom ay i ask how you came upw ith 11.4 i think that'sa nother problemi 'm having?

Answer 11

sorry for the bad keyboard grammar. i was wanting to know how you came up with 11.4 that is another problem i have is how to find that number before getting started?

Answer 12

this is how it's done.
the log button on your calculator is log base 10.
to use base "a" instead, we would do this:
\[\log_a(x) = \frac{ \log_{10}(x) }{ \log_{10}(a) }\]
this also works with ln button (log base e). as long as you use the same log base in the numerator and denominator.

so:\[\log_{1.05}(2) = \frac{ \ln(2) }{ \ln(1.05) }\]

Answer 13

11.4 is 2 times 5.7

Answer 14

oh okay understand now

Answer 15

okay hold on a sec...

Answer 16

14.21

Answer 17

yes. so the answer is 2000 + 14.21 years. not sure whether or not you need to round up

Answer 18

14.21+2000=2014

Answer 19

looks good

Answer 20

yay thank you. ih ave one more problem kind oft he same.

Answer 21

for this one i have v=1000()^()t not sure what top ut in it

Answer 22

is it 6%/2 +1? =1.03

Answer 23

@Kainui

Answer 24

I don't really know what your question is.

Answer 25

i need help with problem number 2

Answer 26

How can I help you?

Answer 27

i needh elp solving this problem here...

Answer 28

Where are you stuck?

Answer 29

well so far i have v=1000()^()t where i have those parenthesis is wherei 'm having problems not sure what answer goes in thosetw o places

Answer 30

@Kainui any idea?

Answer 31

@ranga

Answer 32

Just plug in all the given numbers. The following numbers are given in the problem:
P, r, n. Plug the numbers into the formula and you will have V as a function of t.

Answer 33

okay well i have v=1000(0\)^6()t so to get the numberi n the parenthesis do i do 6%/2+! to get 1.03?

Answer 34

P = 1000
r = 6% = 0.06 (r should be in decimal in this formula)
n = 2 (compounded semi-annually means compounded TWICE a year and so n = 2)

Answer 35

okay so my final answer will belog(v/1000)/2log(1.03)

Answer 36

Yes. \[\Large t = \frac{ \log(V/1000) }{ 2\log(1.03) }\]

Answer 37

If you want you can write numerator as log(V) - log(1000) = log(V) - 3 since
log(A/B) = log(A) - log(B)

Answer 38

okay