Answers2025-2026 FBISD - Precalculus B CRUnit Test

Unit Test — Cumulative exam Answers

24 verified answers3 views
1
Free Preview

Review the table of values for function g(x).xg(x)2.9–1.552.99–1.582.999–1.593.0011.593.011.583.11.55

A
The limits = –1.6 and = 1.6. Both and exist, so exists.
Option A
B
The limits = 1.6 and = –1.6. Both and exist, so exists.
Option B
C
The limits = –1.6 and = 1.6. Because ≠ , does not exist.
Option C
D
The limits = 1.6 and = –1.6. Because ≠ , does not exist.
Option D
2
Free Preview

Review the graph of function j(x).

Question illustration
A
3
B
4
C
5
D
6
3

Review the graph of the function f(x).

Question illustration
A
Limit of f (x) = 2 as x approaches 1 minus. Limit of f (x) D N E as x approaches 1 plus.
Option A
B
Limit of f (x) = negative 2 as x approaches 1 minus. Limit of f (x) D N E as x approaches 1 plus.
Option B
C
Limit of f (x) D N E as x approaches 1 minus. Limit of f (x) D N E as x approaches 1 plus.
Option C
D
Limit of f (x) D N E as x approaches 1 minus. Limit of f (x) = negative 2 as x approaches 1 plus.
Option D
4

What is ?

Question illustration
A
0
B
1
C
3
D
DNE
5

Over the closed interval [3, 8], for which function can the extreme value theorem be applied?

A
h (x) = StartFraction negative 2 Over 5 (x minus 4) squared EndFraction
Option A
B
h (x) = StartFraction (x minus 5) (x minus 1) Over x squared minus 25 EndFraction
Option B
C
h (x) = StartLayout Enlarged left-brace first row StartFraction 9 x Over 10 minus x EndFraction, x less-than 4 second row x + 2, x greater-than-or-equal-to 4 EndLayout
Option C
D
h (x) = StartLayout Enlarged left-brace first row negative x, x less-than 5 second row x squared minus 20, x greater-than-or-equal-to 5 EndLayout
Option D
6

Given f(x) = 3 and g(x) = cos(x). What is ?

Question illustration
A
2
B
3
C
4
D
DNE
7

Review the table of values for function k(x).xk(x)–19.137.5–19.0137.95–19.00137.995–19.000137.9995–19undefined–18.999943.9995–18.99943.995–18.9943.95–18.943.5

A
37.5
B
38
C
43.5
D
44
8

Which function is continuous at x = 18?

A
f (x) = StartFraction (x minus 18) squared Over x EndFraction
Option A
B
f (x) = StartFraction x squared minus 17 x minus 18 Over x minus 18 EndFraction
Option B
C
f (x) = tangent (StartFraction pi Over 36 EndFraction x)
Option C
D
f (x) = StartLayout Enlarged left-brace first row x squared, x not-equals 18 second row 36, x = 18 EndLayout
Option D
9

What is ?

Question illustration
A
Negative one-sixth
Option A
B
0
C
One-sixth
Option C
D
DNE
10

Given . What is ?

Question illustration
A
–2
B
–1
C
1
D
2
11

Review the graph of a piecewise function.

Question illustration
A
jump discontinuity at x = –2; mixed discontinuity at x = 0
B
jump discontinuity at x = –2; infinite discontinuity at x = 0
C
endpoint discontinuity at x = –2; mixed discontinuity at x = 0
D
endpoint discontinuity at x = –2; infinite discontinuity at x = 0
12

Review the graph of function g(x).

Question illustration
A
–6
B
–3
C
0
D
3
13

What is ?

Question illustration
A
Negative one-sixth
Option A
B
0
C
One-sixth
Option C
D
DNE
14

What is ?

Question illustration
A
–16
B
–8
C
StartFraction 1 Over 16 EndFraction
Option C
D
StartFraction 1 Over 8 EndFraction
Option D
15

Review the graph of function g(x).

Question illustration
A
Limit of g (x) = 2 as x approaches 4 negative and limit of g (x) = negative 4 as x approaches 4 plus
Option A
B
Limit of g (x) = negative 4 as x approaches 4 negative and limit of g (x) = negative 2 as x approaches 4 plus
Option B
C
Limit of g (x) = negative 4 as x approaches 4 negative and limit of g (x) D N E as x approaches 4 plus
Option C
D
Limit of g (x) D N E as x approaches 4 negative and limit of g (x) = negative 4 as x approaches 4 plus
Option D
16

Review the table of values for function g(x).xg(x)0.970.997000.99970,0000.99997,000,0001undefined1.00017,000,0001.00170,0001.017001.17

A
0
B
7,000,000
C
700,000,000
D
DNE
17

Given . What is ?

Question illustration
A
Negative three-halves
Option A
B
0
C
Three-halves
Option C
D
DNE
18

Which function is continuous at x = –4?

A
g (x) = StartFraction x Over (x + 4) squared EndFraction
Option A
B
g (x) = StartFraction (x + 8) (x + 4) Over x + 4 EndFraction
Option B
C
g (x) = StartLayout enlarged left-brace first row x squared, x less-than negative 4 second row negative 4 x, x greater-than-or-equal-to negative 4 EndLayout
Option C
D
g (x) = StartLayout Enlarged left-brace first row x squared minus 4, x less-than negative 4 second row 5 x, x greater-than-or-equal-to negative 4 EndLayout
Option D
19

Review the table of values for function h(x).xh(x)9.912.79.9912.979.99912.9979.999912.999710undefined10.000118.500410.00118.50410.0118.5410.118.9

A
12.5
B
13
C
18.5
D
19
20

Given . What is ?

Question illustration
A
0
B
4
C
64
D
128

Did you find these answers helpful?

More from this Course

Quiz
10 verified answers

Modeling with Sequences and Series

Quiz
10 verified answers

Modeling with Sequences and Series

Quiz
10 verified answers

Unit Test