Add Subtract Multiply Functions

f(x) = 5x + 3
Find f(4x).

• 23x

• 20x + 3

• 4x + 3

• 9x + 3

f(n)=n²+4n
g(n)=-n-5
Find f(n)+g(n)

• n²+3n-5

• -n³+2n-7

• n³+3n-3n

• n²-3n-5

Given
f(x)=3x²+7x and g(x)=2x²-x-1, find (f+g)(x).

• 11x² - 1

• 5x⁴ + 6x² - 1

• 5x² + 6x - 1

• 5x² + 8x - 1

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

• 4x²+24

• 4x²+20x+24

• 4x²+12x+24

• 4x²+4x+24

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

• x²+x+9

• x²-x+9

• x²-x

• x²-x+18

h(x) = 2x² - x + 1
g(x) = 3x
Find (h*g)(x).

• 5x³ + 2x² + 3x

• 2x² + 2x + 1

• 6x³ - 3x² + 3x

• 6x³ - 1

Given
f(x) = 3x²+7x and g(x) = 2x²-x-1, find (f + g)(x).

• 11x² - 1

• 5x⁴ + 6x² - 1

• 5x² + 6x - 1

• 5x² + 8x - 1

g(x) = x² + x - 2
Find g(x - 3)

• g(x - 3) = x² - 5x + 4

• g(x - 3) = x² - 7x - 14

• g(x - 3) = x² + x + 4

• g(x - 3) = x² - 6x + 10

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

• 5n+1

• -5n+1

• -2n+1

• -6n-1

f(x)=x²+1
g(x)=2x-5
Find f(x)-g(x)

• x²-2x+6

• -x²+2x+4

• -x²-2x-6

• x²-2x-4