Each month, a phone company charges $20 for 500 minutes of talk time plus $0.45 for each additional minute. Unlimited texting co
sts $30 more. Choose an expression to show the cost of a talk-and-texting plan for one month, given x minutes over 500. Options
0.45 + 50x
50 + 0.45x 30 + 20x
500 + 50 + 0.45x