Can you please explain how you did it

so I can learn

Chapter 2, Question 9 Marcia Curtis is the vice president of development for "Tamales to Go," a rapidly expanding chain of restaurants featuring takeout tamales and other Mexican food specialties. Currently, the chain has 150 units and average unit volume is $800,000 per year. Annual per-unit revenue growth for opened units is 5 percent per year. Tonya Gamez, the chain's president, has promised company stockholders the chain will experience 12 percent overall revenue growth in the next year. Assuming that per-unit growth on existing units continues to average 5 percent, calculate how many total operating units Marcia will need to have open next year to meet Tonya's goal of a 12 percent overall increase in the chain's revenue. Tamales to Go Next Year Total Revenue Per Unit Revenue Total Number of Units This Year $120,000,000 $800,000 150