anonymous
  • anonymous
Suppose the amount of money in a bank account with an initial balance of $25,000 earns 1.5 percent interest per year. If the exponential function, y=A*B^X , is used to model this situation, which value would represent B in the function?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
Sorry I have so many questions. I'm taking an exam and I really want to get a good grade. I suck at math.
anonymous
  • anonymous
1.015 = B 1 for the original 0.15 for the interest
Kash_TheSmartGuy
  • Kash_TheSmartGuy
No direct answers!

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More answers

anonymous
  • anonymous
Man you are a life saver. Do you think you could help me with another problem? And not give me the answer.
Kash_TheSmartGuy
  • Kash_TheSmartGuy
Read the "Terms and Conditions" and "Code of Conduct"
anonymous
  • anonymous
ok
Kash_TheSmartGuy
  • Kash_TheSmartGuy
^^ That was for @peachpi
anonymous
  • anonymous
@peachpi
anonymous
  • anonymous
Well can someone help please?
anonymous
  • anonymous
@Kash_TheSmartGuy it's kind of hard not to give a direct answer to that question. There's nothing to work out
Kash_TheSmartGuy
  • Kash_TheSmartGuy
Well, you can give them the formula or explanation of how you got the answer! Don't just give away answers!
anonymous
  • anonymous
what are you talking about? The question is asking him to pick out a number for use in a formula. And I gave a perfectly good explanation of how to do it
anonymous
  • anonymous
So can someone help please?
anonymous
  • anonymous
what's the question?
anonymous
  • anonymous
well its 2 actually
anonymous
  • anonymous
ok
anonymous
  • anonymous
ok so first question: Which exponential function is best represented by this table? x f(x) 0 2 1 6 2 18 3 54 answers: f(x)=3(2)^x f(x)=2(3)^x f(x)=3(1/2)^x f(x)=2(1/3)^x
anonymous
  • anonymous
|dw:1435278909112:dw|
anonymous
  • anonymous
got it?
anonymous
  • anonymous
Not really
anonymous
  • anonymous
the terms are the f(x) values. It's a sequence of numbers. 2, 6, 18, 54. 2 is the first term, 6 is the second term and so on
anonymous
  • anonymous
WE know a=2, so you just have to calculate r to get your function
anonymous
  • anonymous
|dw:1435279370768:dw|
anonymous
  • anonymous
you good on this one?
anonymous
  • anonymous
Im lost
misssunshinexxoxo
  • misssunshinexxoxo
Peachpi did an adequate job answering this; he did not give a direct answer and just did 2 out of his way; please be polite on OS.
anonymous
  • anonymous
was that directed towards me?
anonymous
  • anonymous
Im being polite I just dont get the problem
misssunshinexxoxo
  • misssunshinexxoxo
Was directed for kash
misssunshinexxoxo
  • misssunshinexxoxo
Answers look correct to me:)
anonymous
  • anonymous
y = ar^x is a general formula for an exponential function. They're asking you to find a and r for the specific points in your table. You don't really need to worry about the x-values. Only look at the f(x) part of the table. For exponential functions, a = the first number on the f(x) side. r = (2nd #)/(1st #) = (3rd #)/(2nd #) = (4th #)/(3rd #) → it's the same no matter which two consecutive numbers you use.
anonymous
  • anonymous
where'd you get get a and r from?
anonymous
  • anonymous
they're just constants. placeholders. you can use any two letters
anonymous
  • anonymous
you need a letter to hold the place of the constant until you find what it is. It's kind of like the how a - quadratic function is y=ax²+bx+c - a linear function is y = mx+b. - Exponential functions are y = ar^x The constants just represent part of the function
anonymous
  • anonymous
does that make any sense at all?
anonymous
  • anonymous
no its fine. Thank you for all of you help. ill just wing it based off what you gave me
anonymous
  • anonymous
this may help https://www.khanacademy.org/math/algebra2/exponential_and_logarithmic_func/exp_growth_decay/v/exponential-growth-functions
anonymous
  • anonymous
Ok, thanks man

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