DSC1520 Quantitative Modelling I
University of South Africa
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DSC1520 BUNDLE 2023
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---6May 2023
- Exam (elaborations)
DSC1520 Assignment 2 Semester 1 2023 (860475)


Exam (elaborations)
DSC1520 ASSIGNMENT 2 SEMESTER 1 2023


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DSC1520 Assignment 4 Semester 1 2023 (860927)


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DSC1520 ASSIGNMENT 4 SEMESTER 1 2023


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DSC1520 Assignment 3 Semester 1 2023 (860914)


Exam (elaborations)
DSC1520
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LIBRARYpro
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Exam (elaborations)
DSC1520 ASSIGNMENT 1 SEMESTER 1 2022 POSSIBLE SOLUTIONS QUANTITATIVE MODELLING
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---12April 20222021/2022A+
- DSC1520 ASSIGNMENT 
1 SEMESTER 1 2022 
POSSIBLE SOLUTIONS 
QUANTITATIVE 
MODELLING.QUANTITATIVE MODELLING (DSC1520) ASSIGNMENT 1 SEMESTER 1 (2022) 
 
 
The equation of the straight line is given by y = mx + c 
 
Use the point (3;1) to find c the y-intercept 
 
OPTION 1 
 
S(t) = 1800 + 1500e− 
0,3t+1,5 
2000 = 1800 + 1500e− 
0,3t+1,5 
2000 - 1800 = 1500e− 
0,3t+1,5 
200 = 1500e−0,3t+1,5 
 
 
 
 
 
Page 2 of 11 
t = 12 days 
OPTION 4 
 
a = 80 ; b = 0.5 
 
 
OPTION 2 
= 
= 
= 
= 
1.5 - = ...
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D0ctorMackenzie
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Exam (elaborations)
DSC1520 ASSIGNMENT 1 SEMESTER 1 2022 POSSIBLE SOLUTIONS QUANTITATIVE MODELLING.
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---12March 20222021/2022A+
- DSC1520 ASSIGNMENT 
1 SEMESTER 1 2022 
POSSIBLE SOLUTIONS 
QUANTITATIVE 
MODELLING.QUANTITATIVE MODELLING (DSC1520) ASSIGNMENT 1 SEMESTER 1 (2022) 
 
 
The equation of the straight line is given by y = mx + c 
 
Use the point (3;1) to find c the y-intercept 
 
OPTION 1 
 
S(t) = 1800 + 1500e− 
0,3t+1,5 
2000 = 1800 + 1500e− 
0,3t+1,5 
2000 - 1800 = 1500e− 
0,3t+1,5 
200 = 1500e−0,3t+1,5 
 
 
 
 
 
Page 2 of 11 
t = 12 days 
OPTION 4 
 
a = 80 ; b = 0.5 
 
 
OPTION 2 
= 
= 
= 
= 
1.5 - = ...
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DoctorReinhad
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Exam (elaborations)
DSC1520Quantitative Modelling 1
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---9November 20212021/2022A+
- Quantitative Modelling 1 
DSC1520 
Question 1 
1. 
(2a 
2 
b 
3 
) 
2 × (ab4 
) 
3 
(2a 
3b 
2) 
4 
= 
(4a 
4 
b 
6 
) × (a 
3 
b 
12) 
16a 
12b 
8 
= 
a 
4+3−12b 
6+12−8 
4 
= 
a 
−5 
b 
10 
4 
= 
b 
10 
4a 
5 
. 
2. 
q 4x 
y−4 = 
√ 
4x × 
p 
y 
4 
 
= (4x) 
1 
2 × y 
4 
) 
1 
2 
= (4 1 
2 x 
1 
2 × y 
2 
) 
= 2y 
2√ 
x 
Question 2 
1. 
−x 
2 + 8x − 16. 
For roots we make use of the quadratic formula 
x = 
−b − 
√ 
b 
2 −4ac 
2a 
and x = 
−b + 
√ 
b 
2 −4ac ...
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DoctorReinhad
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Other
DSC1520 - Quantitative Modelling I ASSIGNMENT.
-
---24November 20212021/2022
- DSC1520 - Quantitative Modelling I. 
The daily rate of sales of a product (in units per day) is approximated by the exponential equation 
S(t) = 1 800 + 1 500e 
−0,3t+1,5 
, 
with t the number of days it has been on the market. After how many days, rounded to a whole 
number, will the rate of sale be 2 000 units per day? 
[1] 4 
[2] 7 
[3] 11 
[4] 12 
[5] None of the above. 
Question 3 
If the demand function is P = 80 − 0,5Q where P and Q are the price and quantity respectively, 
determine...
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ExcelAcademia2026