Functions are often used to model real-life situations. Identifying an appropriate functional model will lead to a better understanding of various phenomena.
Example 1
Give a function C that can represent the cost of buying the cost of buying x meals, if one meal costs 40 pesos.
Base formula based on the question will be C(x) = 40(x)
x represents the meals that are bought.
C(2) = 40(2)
= 80
There will be 80 pesos if 2 meals are bought.
C(3) = 40(3)
= 120
There will be 120 pesos if 3 meals are bought.
C(4) = 40(4)
= 160
There will be 160 pesos if 4 meals are bought.
Example 2
A car travels a distance 120km after t hours. Express the velocity of the car as the function of the number of hours t if traveled.
Base formula based on the question will be:
V(t) = 120/t
Example 3
A House is rented for P4800 per month. If the landlord demanded a 1 month deposit determine the function that represents the total amount of the money the tenant have given to the landlord after a number of months.
Formula based on the question will be: A(m) = 4800(m) + 4800
A(4) = 4800(4) + 4800
A(4) = 19200 + 4800
A(4) = 24000
The tenant gave P24000 to their landlord after 4 months.
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