Operations on Functions (Multiplication)

Operations on Functions (Multiplication)

10th - 11th Grade

10 Qs

quiz-placeholder

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Operations on Functions (Multiplication)

Operations on Functions (Multiplication)

Assessment

Quiz

Mathematics

10th - 11th Grade

Practice Problem

Hard

CCSS
HSF-BF.A.1B, HSF.IF.A.2, HSF-BF.A.1C

+1

Standards-aligned

Created by

Elizabeth Borres

Used 30+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If  f(x) = x1f\left(x\right)\ =\ x-1 and g(x)=5x2g\left(x\right)=5x-2 , then  (fg)(x)=\left(f\cdot g\right)\left(x\right)= 

 5x35x-3  

 5x2+25x^2+2  

 5x27x+25x^2-7x+2  

 5x75x-7  

Tags

CCSS.HSF-BF.A.1B

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If  f(x) = 3x24f\left(x\right)\ =\ 3x^2-4 and g(x)=x28x+4g\left(x\right)=x^2-8x+4 , then  (fg)(x)=\left(f\cdot g\right)\left(x\right)= 

 3x424x3+8x2+32x163x^4-24x^3+8x^2+32x-16  

 3x48x163x^4-8x-16  

 3x424x3+8x232x163x^4-24x^3+8x^2-32x-16  

 3x424x3+16x2+32x163x^4-24x^3+16x^2+32x-16  

Tags

CCSS.HSF-BF.A.1C

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Given f(x) = 3x2 - 2x + 1 and           g(x) = x - 4, find (f*g)(x). 

3x3 - 10x2 - 7x - 4
3x3 - 14x2 + 9x - 4
3x2 - x - 3
3x3 + 14x2 - 9x - 4

Tags

CCSS.HSF-BF.A.1B

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

If g(x) = 6x + 4  and
f(x) = 2x - 7
Find f(x) * g(x)

8x - 3
4x + 11
12x2 - 28
12x2 - 34x - 28

Tags

CCSS.HSA.APR.A.1

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

f(x)=2x+4
g(x)=3x2-1
Find f(x)*g(x)

6x4+12x3-4x2-8x
-6x3+12x2+2x-4
6x3+12x2-2x-4
5x2-18x+20

Tags

CCSS.HSF-BF.A.1B

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Find f(2) if f(x)= 3x-9

0
2
3
-3

Tags

CCSS.HSF.IF.A.2

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

f(x)=x2-5x
Evaluate f(4).

-4
126
24
84

Tags

CCSS.HSF.IF.A.2

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