If f (x) = 3x - 1 and g (x) = x + 2, find (f + 9) (x).

O A 2-1

O B 4x+1

OC 2-3

O D. 3x-3

SUB

(f+g) (x) = 4x+1

Step-by-step explanation:

This question asks us to find (f+g) (x), which is equal to adding f (x) and g (x).

f (x) + g (x)

We know that f (x) is 3x-1 and g (x) is x+2.

f (x) = 3x-1

g (x) = x+2

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

Combine like terms. Add all the terms with a variable, then all the terms without a variable.

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

(4x) + (-1+2)

(4x) + (1)

4x+1

(f+g) (x) = 4x+1

4x + 1

Step-by-step explanation:

f (x) = 3x - 1

g (x) = x + 2,

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

Combine like terms

=4x + 1