A town's population went from 25,800 to 42,600 in 15 years. What was the percent of change? A. 45%
B. 39.4%
C. 61%
D. 65.1%

Each month, a phone company charges $20 for 500 minutes of talk time plus $0.45 for each additional minute. unlimited texting costs $30 more. choose an expression to show the cost of a talk-and-texting plan for one month, given x minutes over 500.