Is this a Exponential Growth or Exponential Decay,
y = 0.65(1.3)^(x)

Question

Is this a Exponential Growth or Exponential Decay,
 y = 0.65(1.3)^(x)

ganeshie8 · Answer

exponent positive or negative ?

anonymous · Answer

its just x so im guessing positive

ganeshie8 · Answer

as you increase x, what happens to y ?

anonymous · Answer

it should decrease rite

anonymous · Answer

depends entirely on whether the base (in this case 1.3) is greater than or less than one

anonymous · Answer

since $1.3>1$  this models growth

anonymous · Answer

so is y=1 or x=1

ganeshie8 · Answer

@satellite73  put x = 1 & x = -1 , compare the values, and tell me if it you still say it doesnt depend on exponent sign :)

anonymous · Answer

?

unklerhaukus · Answer

$$ y(x) = 0.65(1.3)^{x}$$
$$ y(1) = 0.65(1.3)^{1}=0.845$$$$ y(10) = 0.65(1.3)^{10}\approx8.96$$
as x has grown, y has grown

anonymous · Answer

you lost me entirely $y=P_0\times b^x$ grows so long as $b>1$ and decreases if $b<1$

anonymous · Answer

in other word, in this example, if 
$$x_1<x_2\implies .65(1.3)^{x_1}<.65(1.3)^{x_2}$$

anonymous · Answer