Function Operations

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

• 14x-10
• -8x+2
• 2x+2
• 2x-2

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

• x²+x+9
• x²-x+9
• x²-x
• x²-x+18

If f(x) = 2x and g(x) = 2x - 7, find f(x)/g(x).

• (2x - 7)/(2x)

• -7

• (2x)/(2x - 7)

• 1x - 3.5

If g(x) = 6x + 4 and f(x) = 3, find f(x) * g(x)

• 18x + 4

• 9x + 7

• 6x + 7

• 18x + 12

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

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

• 5n+1
• -5n+1
• -2n+1
• -6n-1

What is f(6) for the function f(x)=3x-8

• -8

• 10

• -144

• answer not here

$f\left(x\right)=5x-12$ What is $f\left(-4\right)$

• -32

• -3

• -12

• 3