Question 1
1. Let n represent the number of packs printed and sold.
1.1. Write the expressions, in simplified form, for the following:
1.1.1. Total printing cost, C(n)
The printing shop charges:
Fixed setup fee = R30
R6 per pack
C(n)=30+6n
1.1.2 Total income, I(n)
Each pack is sold for R10.
I(n)=10n
1.1.3 Profit, P(n)
Profit = Income − Cost
P(n)=I(n)−C(n)
=10n−(30+6n)
=10n−30−6n
P(n)=4n−30
1.2 Evaluate P(12) and interpret your answer.
Given:
P(n)=4n−30
Substitute n=12:
P(12)=4(12)−30
=48−30
=18
Answer:
P(12)=18
Interpretation:
If the club prints and sells 12 packs, they will make a profit of R18.