WorksheetsUnit 3 Review
Total questions: 11
Worksheet time: 31mins
Name
Class
Date
1.
f(n)=2n+1
g(n)=3n
Find f(n)+g(n)
g(n)=3n
Find f(n)+g(n)
a)
5n+1
b)
-5n+1
c)
-2n+1
d)
-6n-1
2.
f(n)=x2+1
g(n)=2x-5
Find f(n)-g(n)
g(n)=2x-5
Find f(n)-g(n)
a)
x2-2x+6
b)
-x2+2x+4
c)
-x2-2x-6
d)
x2-2x-4
3.
f(x) = 3x2 + 7x and g(x) = 2x2 - x - 1,
find (f - g)(x).
find (f - g)(x).
a)
x2 + 8x + 1
b)
x2 + 6x - 1
c)
5x2 + 8x - 1
d)
x2 + 8x -1
4.
f(x) = 4x+8
g(x) = x+3,
Find f(x) * g(x)
g(x) = x+3,
Find f(x) * g(x)
a)
4x2+24
b)
4x2+20x+24
c)
4x2+12x+24
d)
4x2+4x+24
5.
f(x)=2x+4
g(x)=3x2-1
Find f(x)*g(x)
g(x)=3x2-1
Find f(x)*g(x)
a)
6x4+12x3-4x2-8x
b)
-6x3+12x2+2x-4
c)
6x3+12x2-2x-4
d)
5x2-18x+20
6.
f(x) = 3x + 10
g(x) = x - 2
Find f(g(5))
g(x) = x - 2
Find f(g(5))
a)
19
b)
23
c)
-10
d)
None of these.
7.
p(x) = 3x + 4
q(x) = 2x2
Find q(p(-2))
q(x) = 2x2
Find q(p(-2))
a)
8
b)
-8
c)
28
d)
None of these.
8.
Given g(x)= -3x and f(x)=x2+2, find g(f(x)).
a)
g(f(x))= -3x2-6
b)
g(f(x))= -3x2+2
c)
g(f(x))=9x2+2
d)
g(f(x))= -9x2+2
9.
Given g(x)= -3x and f(x)=x2+2, find f(g(x)).
a)
f(g(x))= -3x2-6
b)
f(g(x))= -3x2+2
c)
f(g(x))=9x2+2
d)
f(g(x))= -9x2+2
10.
Given f(x)= -3x+7 and g(x)=2x2 - 8, find f(g(x)).
a)
f(g(x))= -6x2+31
b)
f(g(x))= -6x2+24
c)
f(g(x))=18x2-84x+6
d)
f(g(x))=9x2-42x-1
11.
Given f(x)= -3x + 7 and g(x)=2x2 - 8, find g(f(x)).
a)
g(f(x))= -6x2 + 31
b)
g(f(x))= -6x2 + 24
c)
g(f(x))=18x2 - 84x + 90
d)
g(f(x))=9x2 - 42x - 41
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