Find the inverse of the following function
2 answers:
Answer:
ƒ^-1 (x) = 
Step-by-step explanation:
Substitute y for f (x)

Interchange x and y

Swap the sides of the equation

Multiply both sides of the equation by y + 7
-2y + 2 = (y + 7)x
Distribute x through the parentheses
-2y + 2 = xy + 7x
Move the expression/constant to the left-hand side and change its sign
-2y - xy + 7x - 2
Factor out from the expression
(-2 - x)y = 7x - 2
Divide both sides of the equation by -2 - x

Simplify the expression

Substitute ƒ ^-1 (x) for y

f-¹(x)=
Answer:
Solution given:
f(x)=
Let f(x)=y
y=
Interchanging role of x and y
x=
doing crisscrossed multiplication
x(y+7)=-2y+2
now solve it:
xy+7x=-2y+2
keep like terms in one side
xy+2y=2-7x
take common
y(x+2)=2-7x
make a value of y
y=
So,
f-¹(x)=
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Convert 3h and 45 min to hours so it will be 3.9 hours
Then say:
Distance = speed ✖️time
= 122 km/h ✖️3.9h
=475.80 km
He will travel 475.80 km
Hope this helps ;)
I believe that would be 64C.