Topic: Application of Linear Equations

Task #1: Show your work here. You may use graphing paper for the graph or DESMOS calculator for the graph. Make your work neat and orderly.

Problem Solving Business Link. Assume that each situation can be modeled by a linear equation in two variables 8. In 1997, a US dollar exchanges for Php 25. In 2017, it exchanges for Php 50. a. What is the rate of change? b. Write the linear equation. c. Graph the equation. d. At this rate, about how much would be the exchange rate of the US dollar in pesos in 2027 9. To help his family, Nonoy sells newpapers in the morning. He gets Php 5 per newspaper sold and a Php 30 a day tip from the supplier. a. How much does he earn if he sells 30 newspapers in one day? b. Write the linear equation. c. Graph the equation. 10. In a certain restaurant, customers must pay Php 250 for the basic pizza and Php 5 for each additional slice of meat topping they wish to have in their pizza. a. Express the cost of a pizza as a function of how much meat is in it. b. How much will the pizza cost if it has a dozen slices of meat topping? c. Pam paid Php 340 for her pizza. How many slices of meat topping were added to it? Php 120. 11. You buy a belt for Php 150 and some shirts. Each shirt cost Php 200. The shipping cost is What is the total cost if you buy 5 shirts? b. Write the linear equation.Task #2: Translate the following phrases or statements into mathematical expressions. 1. Thrice a number (t) less than five is twenty. 2. Mother Lily's age z years ago if she is fifty-seven years old now 3. Sally's height if she grows y cm and she is one hundred twenty-seven cm tall now 4. Adult tickets in a park cost P 50.00 each and tickets for children cost P25.00 each. Write an equation showing a combination of an adult's ticket and children's ticket that cost P 1,000.00. 5. The octopus ride at the school fair costs P10.00 and the bump car cost P15.00. Rodel has P100.00 and decides to spend it all on t octopus rides and b bump car rides. Write an equation for the situation