4/19 Combining Functions

When f(x) = 9-3x and g(x) = 5x-7 , find f(x)+g(x). 

• 14x-10
• -8x+2
• 2x+2
• 2x-2

Tags

CCSS.HSA.APR.A.1

CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

When f(x) = x²+9 and g(x) = x-9, find f(x)-g(x). 

• x²+x+9
• x²-x+9
• x²-x
• x²-x+18

Tags

CCSS.HSA.APR.A.1

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

• 5n+1
• -5n+1
• -2n+1
• -6n-1

Tags

CCSS.HSA.APR.A.1

f(n)=x²+1
g(n)=2x-5
Find f(n)-g(n)

• x²-2x+6
• -x²+2x+4
• -x²-2x-6
• x²-2x-4

Tags

CCSS.HSA.APR.A.1

CCSS.HSA.SSE.A.2

Perform (h - g)(n) given the two functions 

 $h\left(n\right)=4n-1$  and  $g\left(n\right)=n^2+3$  

•  $n^2+4n+4$  

•  $3n^3-4n-1$  

•  $-n^2+4n-4$  

•  $n^2-4n+4$  

Tags

CCSS.HSA.APR.A.1

Perform (g - f)(x) given  $g\left(x\right)=-2x-1$  and  $f\left(x\right)=3x+4$  

•  $5x+5$  

•  $-5x-5$  

•  $-x^2+2x-4$  

•  $-5x+5$  

Tags

CCSS.HSA.APR.A.1

Perform (g - f)(x) given  $g\left(x\right)=-2x-1$  and  $f\left(x\right)=3x+4$  

•  $5x+5$  

•  $-5x-5$  

•  $-x^2+2x-4$  

•  $-5x+5$  

Tags

CCSS.HSA.APR.A.1

• 2n + 2

• -2n - 2

• -2n + 2

• 8n - 6

Tags

CCSS.HSA.APR.A.1

CCSS.HSA.SSE.A.1

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3

• -5n - 4

• 7n - 5

• 5n + 4

• 5n - 4

Tags

CCSS.HSA.APR.A.1

CCSS.HSA.SSE.A.1

CCSS.HSA.SSE.B.3