Is there a way to graph a line using the equation of the line?

Help anyone please,
I want to trend some numbers from a graph
The formula the trendline options has given is y=1.1433e to power of .352x.
If 2.5 is x what is the excel formula.

I have a 7th grade project on soil contamination and need to make a bar 3 bar
graph and ph, phosphates, nitrates and organic matter from 3 beach samples.
they are in different measurements mg/kg or %.

If I want to change x-values in a multi-series X-Y scatter
I have to edit x-values seperately for each series
e.g i have 7 series - i have to edit all 7 x-values (even though the new
x-values are the same for all series)

how do I create a 3 dimensional plot, for example XYZ scatter plot?

I have a Pivot Chart with two series of data, one of which is plotted on the
secondary y axis.  Every time I refresh the chart, it defaults back and I
lose my secondary axis.  I then have to manually change this every time.

I have been asked to provide a chart to management that would show cost, sale
price and quanity.  The problem is that the values are very different .  For
example the cost could be $800., and the sale price could be $1400 and the
quanity could be 80.  Is there a type of chart ...

How can i create a pie of pie in 3D view?

How  to add Second Y axis.
Thank you

I've created some pie charts, and they work fine, but I need to change the
percentages to display more granularly by increasing decimal positions.
There are a number of items showing as 0% when in fact they might be .25% or
.33%, and for this particular application I need to be ...

IF
This type of chart not in Standarad or Custom Types.
THANK YOU

How is a target line, say 98%, included in a bar chart?  Some of the bar
data is less than the target, while others have exceeded.

I am working with stacked bar charts.  I would like to be able to show the
total value of each bar.  How do you do that?
Example:  Sales of fruit by month.  January sales: $30 apples, $20 pears,
$50 oranges.

I want to superpose my chart on another image, i.e. a map. How do I let the
lines from my map show through  the colors used in my pie chart? Any way to
play with transparency in such a context? The picture toolbar doesn't hlep as
the transparency button is disabled when I try to ...

When presenting results via scatter charts it is often preferred to keep the
scales identical on both axis (i.e. a unit on each axis is equal to the same
number of pixels on screen). Is it possible to do that in Excel?