Answer:
Using the inverse composition rule you know that if (fog)=x and (gof)=x then the functions are inverses.
(
g
o
f
)
=
(
7
x
+
1
)
−
1
7 this will result in (gof)=x
(
f
o
g)
=
7
x
−
1
7
+1
=
x
−
1
+
1
=x
graphically you can check this if it seems that the functions are reflected over the line x=y.
Step-by-step explanation:
Well, to get the x intercept you have to substitute 0 for y and solve for x, and get rid of the parenthesis ( y=2x+3*x-1*x-4 ) unless you want three different x-intercepts. So if you do want those three intercepts, leave the parenthesis.
We are given with the expression <span> B = 703 * w / h^2. To isolate w in the function, we multiply the whole equation by h^2. This results to B h^2 = 703 w. Next, we divide the equation by 703 to isolate w. The final expression of w becomes w = B h^2 / 703 </span>
Answer:
A) increasing x > -1 ; decreasing x <-1
Step-by-step explanation:
We use the given graph to find the intervals where the function is increasing , decreasing and constant
We analyze the graph from the left
From the left the graph starts decreasing and it is decreasing till -1
From the point (-1,0) the graph changes direction and starts increasing
So we can say that the function is decreasing from -infinity to -1
and increasing from -1 to infinity
decreasing from -infinity to -1 means decreasing x <-1
increasing from -1 to infinity means increasing x > -1
