Immanuel receives a commission of 150 pesos for every cellphone unit he sells. On top of the commission, he receives a monthly salary of 5,000.

with solution pls


a. What is his commission if he sells 25 cell phones?


b. To make a commission of 1,200 pesos, how many cell phones should he sell?


c. What is his income if he sells 100 cell phones in a month?


d. How many cell phones should he sell in a month to make an income of 15,000 pesos?


e. Let I represent the monthly income, and n represent the number of cell phones sold. Express the function I in terms of n.