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Sorry I have so many questions. I'm taking an exam and I really want to get a good grade. I suck at math.
1.015 = B 1 for the original 0.15 for the interest
No direct answers!
Man you are a life saver. Do you think you could help me with another problem? And not give me the answer.
Read the "Terms and Conditions" and "Code of Conduct"
^^ That was for @peachpi
Well can someone help please?
@Kash_TheSmartGuy it's kind of hard not to give a direct answer to that question. There's nothing to work out
Well, you can give them the formula or explanation of how you got the answer! Don't just give away answers!
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
So can someone help please?
what's the question?
well its 2 actually
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
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
WE know a=2, so you just have to calculate r to get your function
you good on this one?
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.
was that directed towards me?
Im being polite I just dont get the problem
Was directed for kash
Answers look correct to me:)
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.
where'd you get get a and r from?
they're just constants. placeholders. you can use any two letters
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
does that make any sense at all?
no its fine. Thank you for all of you help. ill just wing it based off what you gave me
this may help https://www.khanacademy.org/math/algebra2/exponential_and_logarithmic_func/exp_growth_decay/v/exponential-growth-functions
Ok, thanks man