The book is in motion. Hope this answers your question!
The answer is one. do you need an explanation or no
We need to put all elements in one side so that the other side is 0. Then, apply quadratic formula to solve the problem. To do that, we need to subtract both sides by 4.
Answer: 3 hours and 25 minutes
Step-by-step explanation:
Given:
2012 - 23,000 = base count
rate increase per year = 2%
y = 23,000 (1 + 0.02)^x
x is used as an exponent. 2012 will be 0. 0.02 is the decimal form of 2% increase.
2012 : y = 23,000 (1.02)⁰ = 23,000 (1) = 23,000
2013 : y = 23,000 (1.02)¹ = 23,000 (1.02) = 23,460
2014 : y = 23,000 (1.02)² = 23,000 (1.0404) = 23,929.20