EXCELCENTRE LEARNING INSTITUTE 061 043 9805
PU E
SHI
NG Y L E NC
OU TO THE GATE OF EXC EL
Education is the most powerful weapon which you can use to change the world
,EXCELCENTRE LEARNING INSTITUTE 061 043 9805
WARNING: PLEASE NOTE THAT PLAGIARISM IS A SERIOUS ACADEMIC
OFFENSE, therefore students must use this document ONLY as a guideline. Hence
students have regenerated their own (personalized) solutions paying particular
attention to module contents as prescribed by module facilitators, lecturers and
supervisors. This document’s purpose is to compact all sources of information that
might be relevant to students’ assignments, hence additional knowledge on the
provided information is not restricted by the authors. However, submitting this
document as one’s final work is considered unethical, and students should be
penalized. If this document is plagiarized by the users and fails, EXCELCENTRE
should not be rendered accountable since the contents in this document only give
learners a kick-start on what is expected of them from their areas of specialty.
CAUTION: STUDENTS ARE NOT MANDATED TO USE EVERY DETAIL IN THIS
DOCUMENT IN WRITING THEIR ASSIGNMENT
Education is the most powerful weapon which you can use to change the world
,EXCELCENTRE
8/3/26, 10:31 AM
LEARNING INSTITUTE Assessment 3
UNISA 2026 DSC1520-26-S2 Welcome Message Assessment 3
QUIZ
Question 1
Not yet answered
Marked out of 10.00
If Q = 54 − 3P , find P where MR = 0.
a. 9
b. 6
c. 12
d. 3
e. None of the given options is correct.
Question 2
Not yet answered
Marked out of 10.00
Given the following demand function Q = 80 − 2P , find the price P that maximises total revenue
a. 20
b. 80
c. 40
d. 10
e. None of the given options is correct.
Question 3
Not yet answered
Marked out of 10.00
Compute marginal cost, M C (Q) for Q = 10 given the following total cost function T C 3
= 5Q
2
− 10Q + 50Q + 150
a. 1350
b. 1750
c. 1650
d. 1700
e. None of the given options is correct.
061 043 9805
https://mymodules.dtls.unisa.ac.za/mod/quiz/attempt.php?attempt=34387641&cmid=1280754 1/4
, EXCELCENTRE
8/3/26, 10:31 AM
LEARNING INSTITUTE Assessment 3
Question 4
Not yet answered
Marked out of 10.00
2
Compute marginal cost, M C (Q) for Q = 5 given the following total cost function T C = 3Q − 6Q + 9
a. R24
b. R20
c. R28
d. R30
e. None of the given options is correct.
Question 5
Not yet answered
Marked out of 10.00
Compute marginal revenue, M R(x) for x = 5 given the following total revenue function T R = 2x
5 2
− x + 10x + 15
a. 6 250
b. 6 450
c. 6 350
d. 150
e. None of the given options is correct.
Question 6
Not yet answered
Marked out of 10.00
1 3 2
What is the marginal cost when Q = 8 if T C = Q − 8Q + 210Q + 800 ?
3
a. 146
b. 946
c. 1 616
d. 2 138
e. None of the given options is correct.
061 043 9805
https://mymodules.dtls.unisa.ac.za/mod/quiz/attempt.php?attempt=34387641&cmid=1280754 2/4
PU E
SHI
NG Y L E NC
OU TO THE GATE OF EXC EL
Education is the most powerful weapon which you can use to change the world
,EXCELCENTRE LEARNING INSTITUTE 061 043 9805
WARNING: PLEASE NOTE THAT PLAGIARISM IS A SERIOUS ACADEMIC
OFFENSE, therefore students must use this document ONLY as a guideline. Hence
students have regenerated their own (personalized) solutions paying particular
attention to module contents as prescribed by module facilitators, lecturers and
supervisors. This document’s purpose is to compact all sources of information that
might be relevant to students’ assignments, hence additional knowledge on the
provided information is not restricted by the authors. However, submitting this
document as one’s final work is considered unethical, and students should be
penalized. If this document is plagiarized by the users and fails, EXCELCENTRE
should not be rendered accountable since the contents in this document only give
learners a kick-start on what is expected of them from their areas of specialty.
CAUTION: STUDENTS ARE NOT MANDATED TO USE EVERY DETAIL IN THIS
DOCUMENT IN WRITING THEIR ASSIGNMENT
Education is the most powerful weapon which you can use to change the world
,EXCELCENTRE
8/3/26, 10:31 AM
LEARNING INSTITUTE Assessment 3
UNISA 2026 DSC1520-26-S2 Welcome Message Assessment 3
QUIZ
Question 1
Not yet answered
Marked out of 10.00
If Q = 54 − 3P , find P where MR = 0.
a. 9
b. 6
c. 12
d. 3
e. None of the given options is correct.
Question 2
Not yet answered
Marked out of 10.00
Given the following demand function Q = 80 − 2P , find the price P that maximises total revenue
a. 20
b. 80
c. 40
d. 10
e. None of the given options is correct.
Question 3
Not yet answered
Marked out of 10.00
Compute marginal cost, M C (Q) for Q = 10 given the following total cost function T C 3
= 5Q
2
− 10Q + 50Q + 150
a. 1350
b. 1750
c. 1650
d. 1700
e. None of the given options is correct.
061 043 9805
https://mymodules.dtls.unisa.ac.za/mod/quiz/attempt.php?attempt=34387641&cmid=1280754 1/4
, EXCELCENTRE
8/3/26, 10:31 AM
LEARNING INSTITUTE Assessment 3
Question 4
Not yet answered
Marked out of 10.00
2
Compute marginal cost, M C (Q) for Q = 5 given the following total cost function T C = 3Q − 6Q + 9
a. R24
b. R20
c. R28
d. R30
e. None of the given options is correct.
Question 5
Not yet answered
Marked out of 10.00
Compute marginal revenue, M R(x) for x = 5 given the following total revenue function T R = 2x
5 2
− x + 10x + 15
a. 6 250
b. 6 450
c. 6 350
d. 150
e. None of the given options is correct.
Question 6
Not yet answered
Marked out of 10.00
1 3 2
What is the marginal cost when Q = 8 if T C = Q − 8Q + 210Q + 800 ?
3
a. 146
b. 946
c. 1 616
d. 2 138
e. None of the given options is correct.
061 043 9805
https://mymodules.dtls.unisa.ac.za/mod/quiz/attempt.php?attempt=34387641&cmid=1280754 2/4
