Question

If f(x)= 3x-1 and g(x)= x+2, find (f-g)(x).

Answer 1

F(x) = 3x-1
g(x) = x+2

Find (f-g)(x), this means we need to subtract g from x.

(3x-1) - (x+2)

Subtract the like terms:

3x -x = 2x

-1 -2 = -3

Combine them to get 2x-3

The answer is A.

Answer 2

Answer:

Option A.

Step-by-step explanation:

The given functions are

$f(x)=3x-1$

$g(x)=x+2$

we need to find the function (f-g)(x).

Using the composition of functions the subtraction of two functions is defined as

$(f-g)(x)=f(x)-g(x)$

Substitute the given values of functions f(x) and g(x).

$(f-g)(x)=(3x-1)-(x+2)$

$(f-g)(x)=3x-1-x-2$

On combining line terms we get

$(f-g)(x)=(3x-x)+(-1-2)$

$(f-g)(x)=2x-3$

Therefore, the correct option is A.