15. Janet's car insurance payment decreases by $20 each year. Which expressions represent the total change in her payment, in dollars, after 5 years?
A. 20-20-20-20 - 20
B. 100
C5 • (-20)
D. 20. (-5)

Acaterer charges $500 plus $30 per guest to cater a wedding. walt and traci don't want to spend more than $8000 on catering. write and solve an inequality in terms of the number of guests, g, that can be invited. a) 30g ? 8000; g ? 267 b) 500g < 8000; g < 16 c) 500 + 30g < 8000; g < 250 d) 500 + 30g ? 8000; g ? 250