SOLUTION: Working on this problem and don't know how to approach it -
Use the given conditions and the table below to find C, a, and f(x) = Ca^x
Given: f(1) = 18 and f(2) = 9
x | -1
Algebra.Com
Question 248007: Working on this problem and don't know how to approach it -
Use the given conditions and the table below to find C, a, and f(x) = Ca^x
Given: f(1) = 18 and f(2) = 9
x | -1 | 0 | 1 | 2
---+----+----+----+----
y | | | |
Plugging in the givens I get this -
x | -1 | 0 | 1 | 2
---+----+----+----+----
y | | | 18 | 9
but don't know where to go from there.
Thanks for your help - Ryan
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given equation.
Plug in and
Simplify
Divide both sides by 18.
So
---------------------------
Go back to the given equation.
Plug in and
Plug in
Multiply
Reduce
Divide both sides by 18.
Reduce.
So . So the value of C is giving us the function
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