QMI1500 Assignment 1-3 Semester 1 2022 Solutions

QMI1500
Elementary Quantitative Methods
Department of Decision Sciences
Assignment 01 for Semester 01 2022 (compulsory)
Unique Number: 746455
DUE DATE: 28 February 2022




Important:

• This is a multiple-choice assignment that must be answered and submitted ONLINE.
• Always keep your detailed workings in a file to be able to compare your solutions to the ones
that will be published on the QMI1500 module site after the due date. Also, keep a copy of
the options you have chosen, in case of a query.
• The due date of this assignment is fixed. No extension can be granted because the solutions
will be posted on the QMI1500 module site shortly after the closing date.

Question 1

Solving

−7 − 3 × 2(−5) + 6 − 21 ÷ 3
Gives

[1] 26.
[2] 99.
[3] 95.
[4] 22.

Answer:

, This is an expression (A mathematical symbol, or combination of symbols, representing a value,
or relation. Example: 2 + 2 = 4.

Calculate the product or quotient.

−7 − 3 × 2(−5) + 6 − 21 ÷ 3

−7 − 3 × (2 × (−5)) + 6 − 21 ÷ 3
Remove the parentheses:
−7 − 3 × (−2 × 5) + 6 − 21 ÷ 3
Calculate the product or quotient:
−7 − 3 × (−10) + 6 − 7
Determine the sign for multiplication or division:
−7 + 3 × 10 + 6 − 7
Calculate the product or quotient:
−7 + 30 + 6 − 7
Calculate the sum or difference:
23 + 6 − 7
Calculate the sum or difference:
29 − 7
Calculate the sum or difference:
= 22