Make denomenators the same
times left denomenator by (x+3)/(x+3) and right one by (x-9)/(x-9)

=

=

=

if expandded we get
The garbage truck weighs more because one ton is 2000 pounds and 2000 times 6.5= 13000 hope this helped if not please reply I can teach it
That doesn’t make sense. Did you mean 15?
Step-by-step explanation:
here
f(x)=x^2+6
Now
Replacing the value of x
f(3x)=3x^2 +6
F(x)=(2/3)x^1.5
The centroid position along the x-axis can be obtained by
integrating the function * x to get the moment about the y-axis,
then divide by the area of the graph,
all between x=0 to x=3.5m.
Expressed mathematically,
x_bar=(∫f(x)*x dx )/(∫ f(x) dx limits are between x=0 and x=3.5m
=15.278 m^3 / 6.1113 m^2
=2.500 m