Example 1:
Mina wanted to buy food for Momo, her roommate. Mina looked
at the menu and decided to buy 5 Hamburgers, 2 Large and 1 Medium sized Pizzas,
2 boxes of Chicken wings and 1 Spaghetti. What is the total amount of money she
needs to pay? How many wings overall are there inside the boxes she bought? Use
the Basic Form of Function in solving.
Product
|
Quantity
|
Price
|
Hamburger
|
1
|
P 75
|
Pizza
|
1
|
P 129 (S), P 175 (M), P 225 (L)
|
Chicken
|
1 (box) / 6 wings
|
P 100/ box
|
Spaghetti
|
1
|
P 89
|
a.) Let "H" be the Hamburger function
H(1) = (1)(75) = 75 php
b.) Let "L" be the Large Pizza size
Let "m" be the Medium Pizza size
and Let "p" be the Pizza overall
L(2) = (2)(225) = 450 php
m(1) = (1)(175) = 175 php
p = L + m
p= 450 + 175 = 625 php
c.) Let "c" be the Chicken
c(2) = (2)(100) = 200 php
d.) Let "w" be the number of wings inside the box of Chicken
WingsC(2) = (2)(6) = 12 wings
e.) Let "s" be the Spaghetti
s(1)= (1)(89) = 89 php
Amount = 75 + 625 + 200 + 89
= 989 php
The total amount of the food Mina bought is 989 php.
Example 2:
Chaeyoung decided to cut the rope she has into ascending sizes.
It all started from 1.5 inches, 3 inches, 4.5 inches up to 9 inches. How many
pieces did she cut from the respective sizes she did? What were the sizes of
each rope she has cut?
Quantity
|
Size
of each rope
|
1
|
1.5 inches
|
2
|
3 inches
|
3
|
4.5 inches
|
4
|
6 inches
|
5
|
7.5 inches
|
6
|
9 inches
|
Solution:
Let “f” be the function name.
Formula: f(x) = (x)(1.5)
a.)
f(3) = (3)(1.5)
= 4.5 inches
b.)
f(4) = (4)(1.5)
= 6 inches
c.)
f(5) = (5)(1.5)
= 7.5 inches
d.)
f(6) = (6)(1.5)
= 9 inches
Answer: Chaeyoung has cut off 6 pieces of rope with
different sizes.
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