Activity 1: "Real-Life Inverse Application" Directions/Instructions: Read, analyze, and understand each problem set. Solve the problem involving inverse function and show your solution. Use a separate sheet of paper for your answers.
1) Manuella and Samuel are planning a wedding reception at Angel Fields Nature Sanctuary Tagaytay City. It costs a base fee of P40,000 plus P500 per guest except the newlywed couple.

a. State the cost C as a function of number of guests g.
b. Use the function to find the cost if they plan to have 100 guests.
c. Find the inverse function.
d. If their budget for the venue is limited to P85,000, what is the minimum and maximum number of guests?

2) The relative value of currencies fluctuates every day. When this is written in a mathematical statement, 1 US dollar is worth Php 46.43.
a. Find a function f that gives the Philippine peso value f(x).
b. Find f-1.
c. How much US dollars would Php 30,000 Philippine currency be worth?​