Question

1. which expression is equal to (f+g) (×) f (x)=x^2+3;g (x)=x-1

A. x^3-3
B.x^2-2x+4
C. x^2+x+2
D. x^3-x^2+3x-3

2. which expression is equal to (fog)(x)
f (x)=3x; g (x)=4x^2+1

A. 12x^3+3x
B. 4x^2+3x+1
C.12x^2+3
D. 36x^2+1

3. f (x)= 2x-8; g (x) = x-5
what is the value of (gof)(6)
a. -6
b. -1
c. 1
d. 6

4. f(x) =5x-10 what is the value of f^-1 (-3)
a. -5
b. 1.4
c. 9.4
d. -25

Answer 1

the answer of your first question is the part (C)
The answer of your second question is also part (C)
The answer of your third question is part (b)