Presentation about Mathematics

24. Solving Problems
Involving Rational
Functions, Equations and
Inequalities

26. You want to join an online calligraphy
class. You will pay an annual
membership fee of Php 500.00, then
Php 150.00 for each class you go to.
What is the average cost per class if
you go to 10 classes?

27. Step 1: Understand the Problem.
Given: Php 500.00 - annual membership fee
Php 150.00 - payment per class you attend
10 classes - number of classes
Find: What is the average cost per class if you go to
10 classes?

28. Step 2. Devise a plan to solve the
problem
Write the Function Rule in terms
of x.
Function Rule:
𝐟 𝐱 =
𝟓𝟎𝟎+𝟏𝟓𝟎𝒙
𝒙

29. Step 3. Carry out the plan to solve the
problem
Solution: - Substitute x=10 since the problem
asked about the average cost per class if you to
10 classes. - Solve for f(10)