word problems

Question

Statins are used to keep cholesterol in check and are a top-selling drug in the U.S. The equation:

S − 1.7x =5.6 

gives the amount of sales (S) of statin in billions of dollars x years after 1998. According to this equation, how much will/did people in the U.S. spend on statins in the year 2015?

Answer: People in the U.S. will spend billion dollars on statins in 2015.

Answer 1

2015 - 1998 = 17

 

S  - 1.7*17 = 5.6

 

S - 28.9 = 5.6

 

S = 34.5