Each month, a phone company charges $20 for 500 minutes of talking time plus $0.45 for each additional minutes. 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 A. 0.45 + 50x

B. 50 + 0.45x

C. 30 + 20x

D. 500 + 50 + 0.45x

Someone please help on this question