janet's car insurance payment decreases by $20 each year. which expressions represent the total change in her payment, in dollars, after 5 years?

20x5=100

Step-by-step explanation:

$20 a year for 5 years is 20x5. 20x5=100

Answer: The change after five years is equal to - $100

Step-by-step explanation: If the insurance payment is equal to P = N dollars, where P is a real number, we know that after one year, the payment decreaces by $20, so the new payment is:

P = N - $20

Then, after 5 years, the $20 dollars are discounted five times, so the payment will be:

P = N - 5*$20 = N - $100

Then the total change after 5 years is equal to those $100 that are being subtracted in the last equation.