ACTIVITY 1: MY CALL Directions: Read the problem carefully, and then answer the questions that follow.
Suppose you want to call your mother by phone. The charge of a pay phone call is Php 9.00 for the first 3 minutes and an additional charge of Php 2.00 for every additional minute or a fraction of it.
1. How much will you pay if you have called your mother 3 minutes? 4 minutes? 5 minutes? 10 minutes?
2. Based on your answers in item 1, write ordered pairs in the form (time, charged).
3. Based on your answers in item 2; what is the domain? What is the range?
4. What kind of correspondence was shown on the relation?
5. How is the amount charged related to the number of hours you called your mother?
Share
Answer:
1.
A. 5 Php
B. 5 Php
C. 5 Php
D. 7 Php
E. 9 Php
2.
(1,5)
(2,5)
(3,5)
(4,7)
(5,9)
3.
Domain are as follows:
{1,2,3,4,5}
Range are as follows:
{5,7,9}
4.
It's related because using this formula
. Y corresponds to the amount paid. X corresponds to the time. Then m corresponds to the charge per excess time. B corresponds to the fixed rate. Substituting such values leave us with;