Answer:

Step-by-step explanation:
The given function is
f(x) = 4x
As we know
f(x) = y, which implies x= 
Therefore,
y = 4x
x = 
as x= 
So,

replacing y by x in the above expression

So our inverse function is 
Answer:
D 2 1/3 Ft^2
Step-by-step explanation:
We know that this is a triangle, so the area is
A = 1/2 bh
The base is 1 1/6 and the height is 4
Changing 1 1/6 to and improper fraction
1 1/6 = (6*1 +1)/6 = 7/6
A = 1/2 * 7/6 *4
A = 28/12
A = 7/3
Changing back to a mixed number
A = 2 1/3 ft^2
Answer:

Step-by-step explanation:
The angles of a triangle add to 180, add the angles and solve for x