AnswersPBCSD_Grade_Forgiveness_1200710_Mathematics_for_College_Algebra_S2_2023Unit Test

Unit Test — Unit test Answers

25 verified answers3 views
1
Free Preview

Which equation results from isolating a radical term and squaring both sides of the equation for the equation ?

Question illustration
A
mc012-2.jpg
Option A
B
mc012-3.jpg
Option B
C
mc012-4.jpg
Option C
D
mc012-5.jpg
Option D
2
Free Preview

The formula for determining the frequency, f, of a note on a piano is , where h is the number of half-steps from the A above middle C on the keyboard. A note is six half-steps away from the A above middle C. The frequency of the A above middle C is 440 Hz. How much greater is the frequency of the new note compared with the frequency of the A above middle C?

Question illustration
A
29.3%
B
41.4%
C
70.7%
D
182.3%
3

What is the solution of ?

Question illustration
A
x = –3
B
x = 4
C
x = –3 or x = 4
D
no solution
4

When simplified, the expression is 12. Which is a possible value of x?

Question illustration
A
6
B
24
C
144
D
256
5

What is the simplified value of the exponential expression ?

Question illustration
A
Option
Option A
B
Option
Option B
C
2
D
4
6

Which expression is equivalent to ?

Question illustration
A
216
B
1,728
C
RootIndex 3 StartRoot 12 EndRoot
Option C
D
RootIndex 3 StartRoot 72 EndRoot
Option D
7

Which expression is equivalent to ? Assume and .

Question illustration
A
2 a cubed (RootIndex 4 StartRoot 9 b cubed EndRoot)
Option A
B
2 a Superscript 4 Baseline b (RootIndex 4 StartRoot 18 EndRoot)
Option B
C
6 a cubed (RootIndex 4 StartRoot 3 b cubed EndRoot)
Option C
D
12 a Superscript 6 Baseline b (RootIndex 4 StartRoot b EndRoot)
Option D
8

What is the solution to the equation ?

Question illustration
A
w = –8
B
w = –5
C
w = 5
D
w = 8
9

What is the solution of ?

Question illustration
A
x = 142
B
x = 232
C
x = 322
D
no solution
10

What is the simplest form of ?

Question illustration
A
3 x squared (RootIndex 4 StartRoot y Superscript 5 EndRoot
Option A
B
3 x squared y (RootIndex 4 StartRoot y EndRoot)
Option B
C
9 x squared y (RootIndex 4 StartRoot y EndRoot)
Option C
D
9 x Superscript 4 Baseline y squared (RootIndex 4 StartRoot y EndRoot)
Option D
11

Which is an equivalent form of the expression 1800(1.2)–t?

A
mc001-1.jpg
Option A
B
mc001-2.jpg
Option B
C
mc001-3.jpg
Option C
D
mc001-4.jpg
Option D
12

Mario invested $6,000 in an account that pays 5% annual interest compounded annually. Using the formula A = P(1 + r)t, what is the approximate value of the account after 2.5 years?

A
$6,075
B
$6,118
C
$6,456
D
$6,778
13

Which represents a side length of a square that has an area of 450 square inches?

A
in.
Option A
B
in.
Option B
C
112.5 in.
D
115.5 in.
14

What is the extraneous solution to the equation ?

Question illustration
A
p = –4
B
p = –2
C
p = 0
D
p = 4
15

Which of the following describes the solution to the equation ?

Question illustration
A
– 5 is an extraneous solution, and 1 is a true solution.
B
– 5 is a true solution, and 1 is an extraneous solution.
C
Both –5 and 1 are true solutions.
D
Both –5 and 1 are extraneous solutions.
16

A radioactive element has a half-life of six days. What is the approximate decay rate of the element after the first day?

A
0.9%
B
1.5%
C
8.3%
D
10.9%
17

The population, p, of a town after t years is represented using the equation . Which of the following is an equivalent expression?

Question illustration
A
mc005-2.jpg
Option A
B
mc005-3.jpg
Option B
C
mc005-4.jpg
Option C
D
mc005-5.jpg
Option D
18

Which is equivalent to ?

Question illustration
A
4
B
12
C
64
D
192
19

Which is equivalent to ?

Question illustration
A
3
B
6
C
36
D
72
20

What value of c makes the equation true? Assume and

Question illustration
A
c = 12
B
c = 16
C
c = 64
D
c = 81

Did you find these answers helpful?

More from this Course

Quiz
10 verified answers

Introduction to Quadratic Functions

Quiz
10 verified answers

Quadratic Functions: Standard Form

Quiz
10 verified answers

Quadratic Functions: Factored Form