VII. ACTION (MINI TASK)
Have I Learned ? How Can I Relate This To The World?
Instruction: Below are real-life situations that require knowledge of linear functions for you to
make a better choice. Choose one situation to work on and answer the problem that is being
asked. Your answer may include graphs and equations to illustrate your explanation or it can be
in a full-paragraphed form. Take note of the rubric for grading provided below.
Problem 1: The Federal Helium Reserve held about 16 billion cubic feet of helium in 2010, and
is being depleted by about 2.1 billion cubic feet each year. If the rate of depletion doesn't change.
when will the Federal Helium Reserve be depleted?
Problem 2: You are hired as a sales representative in a jewelry company. You are given two
pay options:
Option A: Base salary of P 240,000.00 a year with a commission of 12% of your sales
Option B: Base salary of P 300,000.00 a year with a commission of 5% of your sales
How much jewelry would you need to sell for Option A to produce a larger income?
Note: Computation of yearly income would be:
Option A: f(x) = 240 000 + 0.12.x
Option B: f(x) = 300 000 + 0.05x
Problem 3: Annie's phone bill is based on 65 cents per message unit charge plus a base charge.
Her July bill is P 814.00 which includes 560 message units. What would be her Augusts' bill if it
includes 650 message units?
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