HW: Function Operations

Given the functions

 $f\left(x\right)=3x-9$  and  $g\left(x\right)=x-11$  
find  $f+g$  

•  $4x-20$  

•  $3x^2-42x+99$  

•  $2x+2$  

•  $-2x-2$  

Answer explanation

Tags

CCSS.HSA.APR.A.1

CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

Given the functions

 $f\left(x\right)=3x-9$  and  $g\left(x\right)=x-11$  
find  $f-g$  

•  $4x-20$  

•  $3x^2-42x+99$  

•  $2x+2$  

•  $-2x-2$  

Answer explanation

Tags

CCSS.HSA.APR.A.1

Given the functions

 $f\left(x\right)=3x-9$  and  $g\left(x\right)=x-11$  
find  $g-f$  

•  $4x-20$  

•  $3x^2-42x+99$  

•  $2x+2$  

•  $-2x-2$  

Answer explanation

Tags

CCSS.HSA.APR.A.1

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3

Given the functions

 $f\left(x\right)=3x-9$  and  $g\left(x\right)=x-11$  
find  $g\times f$  

•  $4x-20$  

•  $3x^2-42x+99$  

•  $2x+2$  

•  $-2x-2$  

Answer explanation

Tags

CCSS.HSA.APR.A.1

Given the functions

 $f\left(x\right)=3x-9$  and  $g\left(x\right)=x-11$  
find  $\frac{g}{f}$  

•  $\frac{3x-9}{x-11}$  

•  $\frac{x-11}{3x-9}$  

•  $\frac{3x}{x}$  

•  $\frac{9}{11}$  

Answer explanation

Tags

CCSS.HSA.APR.D.6

CCSS.HSA.APR.D.7

Given the functions

 $f\left(x\right)=x^2+5$  and  $g\left(x\right)=4x-9$  
find  $f+g$  

•  $x^2+4x-4$  

•  $4x^3-9x^2+20x-45$  

•  $x^2-4x+14$   

•  $-x^2+4x-14$  

Answer explanation

Tags

CCSS.HSA.APR.A.1

Given the functions

 $f\left(x\right)=x^2+5$  and  $g\left(x\right)=4x-9$  
find  $f-g$  

•  $x^2+4x-4$  

•  $4x^3-9x^2+20x-45$  

•  $x^2-4x+14$   

•  $-x^2+4x-14$  

Answer explanation

Tags

CCSS.HSA.APR.A.1

Given the functions

 $f\left(x\right)=x^2+5$  and  $g\left(x\right)=4x-9$  
find  $g-f$  

•  $x^2+4x-4$  

•  $4x^3-9x^2+20x-45$  

•  $x^2-4x+14$   

•  $-x^2+4x-14$  

Answer explanation

Tags

CCSS.HSA.APR.A.1

Given the functions

 $f\left(x\right)=x^2+5$  and  $g\left(x\right)=4x-9$  
find  $f\times g$  

•  $x^2+4x-4$  

•  $4x^3-9x^2+20x-45$  

•  $x^2-4x+14$   

•  $-x^2+4x-14$  

Answer explanation

Tags

CCSS.HSA.APR.A.1

Given the functions

 $f\left(x\right)=x^2+5$  and  $g\left(x\right)=4x-9$  
find  $\frac{f}{g}$  

•  $\frac{4x-9}{x^2+5}$  

•  $\frac{x^2+5}{4x-9}$  

•  $\frac{x^2}{4x}$   

•  $-\ \frac{5}{9}$  

Answer explanation

Tags

CCSS.HSA.APR.D.6

CCSS.HSA.APR.D.7

CCSS.HSA.SSE.B.3