Please help me answer these questions. PLEASE TYPE YOUR ANSWER OUT CLEARLY :

Statins are used to keep cholesterol in check and are a top-selling drug in the U.S. The equation: 5' 1.53: = 5.3 gives the amount of sales (3) of statin in billions of dollars a: years after 1998. According to this equation, how much willfdid people in the U.S. spend on statins in the year 2010? Answer: People in the U.S. will spend ' billion dollars on statins in 2010. After a 35% reduction, you purchase a new stereo for $130. What was the price of the stereo before the reduction? A) First write an equation you can use to answer this question. Use a: as your variable and express any percents in decimal form in the equation. The equation is ' B) Solve your equation in part [A] to find the original price of the stereo. Answer: The original price of the stereo was dollars