In the United States, about three–fourths of the 12- to 17-year-olds use a cell phone daily. Nearly all teens use their cell phones to take pictures, about 55% play games, about 35% download games, and about 50% use the calendar to organize and schedule social events.

Today you will investigate cell phones and their features. You will write one- and two-step equations to solve problems. You will review and apply the algebra terms and concepts you learned in this unit.
Step 2: Using two-step equations to solve problems.

a) You need to download 4 games for your math class. Each game is the same price. Since this is your first time downloading a game from the site, you are also charged a one-time $0.75 access fee. You are charged a total of $6.95. What is the cost of each game? Show your work.

b) Your mother has a new cell phone. It comes with 27 applications already installed. She uses only two-thirds of those applications. She downloaded an additional 6 applications that she uses regularly. Write an equation to represent the total number of applications your mom uses. Explain your equation and your reasoning (the equation is to be solved in part c.)

c) How many applications will your mother actually use on her new cell phone? Solve the equation you wrote in part b to find the unknown variable.

I only need help with C