Quiz about Function Operations and Domain

Question 1

Use the graph to find x when g(x)=5.

Accepted Answer

-3

Answer

3

Answer

5

Answer

-5

Question 2

If $$f\left(x\right)=2x^3+8x^2-10x$$ and $$g\left(x\right)=x+8$$ find the domain of $$\frac{f\left(x\right)}{g\left(x\right)}$$

Accepted Answer

All Real Numbers except $$x e-8$$

Answer

All Real Numbers

Answer

All Real Numbers except $$x e0,1,\ -5$$

Answer

All Real Numbers except $$x e0,\ 1,\ -5,\ -8$$

Question 3

f(x) = 9-3x
g(x) = 5x-7
Find f(x)+g(x).

Accepted Answer

2x+2

Answer

14x-10

Answer

-8x+2

Answer

2x-2

Question 4

f(x) = x²+9
g(x) = x-9
Find f(x)-g(x).

Accepted Answer

x2-x+18

Answer

x2+x+9

Answer

x2-x+9

Answer

x2-x

Question 5

f(x)=x²+1
g(x)=2x-5
Find f(x)-g(x)

Accepted Answer

x2-2x+6

Answer

-x2+2x+4

Answer

-x2-2x-6

Answer

x2-2x-4

Question 6

f(x) = 4x+8
g(x) = x+3,
Find f(x) * g(x)

Accepted Answer

4x²+20x+24

Answer

4x2+24

Answer

4x²+12x+24

Answer

4x2+4x+24

Question 7

f(x)=x³-3x
g(x)=-4x+1
Find f(x)*g(x)

Accepted Answer

-4x⁴+x³+12x²-3x

Answer

-4x³-5x²-3

Answer

-4x³+2x²-3x

Answer

-4x^4-x³+12x²⁺3x

Question 8

f(x)=2x+4
g(x)=3x²-1
Find f(x)*g(x)

Accepted Answer

6x³+12x²-2x-4

Answer

6x⁴+12x³-4x²-8x

Answer

-6x³+12x²+2x-4

Answer

5x²-18x+20

Question 9

f(n)=2n+1
g(n)=3n
Find f(n)+g(n)

Accepted Answer

5n+1

Answer

-5n+1

Answer

-2n+1

Answer

-6n-1

Function Operations and Domain

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