Posted by Amy on Tuesday, December 7, 2010 at 9:06pm.
Can someone please show me the steps to this problem...Thanks in advance.
Let f(x) = Ð9xÐ. For the area above the xaxis and between the lines x= 9 and x=18
a. draw and label a sketch with
the area shaded
b. find the area of the region in
the xyplane under the graph
of f(x)

Precalc  Reiny, Tuesday, December 7, 2010 at 9:34pm
describe in words what Ð9xÐ is supposed to be.
On my Mac it came out weird. 
Precalc  Amy, Tuesday, December 7, 2010 at 11:18pm
Sorry it came out that way:
Let f(x) =9x. For the area above the xaxis and between the lines x= 9 and x=18 
Precalc  Amy, Tuesday, December 7, 2010 at 11:22pm
Reiny this is the complete problem...Sorry about all that...Thank you
Let f(x) =9x. For the area above the xaxis and between the lines x= 9 and x=18
a. draw and label a sketch with
the area shaded
b. find the area of the region in
the xyplane under the graph
of f(x) 
Precalc  Amy, Wednesday, December 8, 2010 at 11:14pm
Can anyone help with the following problem please...Thank u so much
Let f(x) =9x. For the area above the xaxis and between the lines x= 9 and x=18
a. draw and label a sketch with
the area shaded
b. find the area of the region in
the xyplane under the graph
of f(x)