Question

PLEASE HELP!!!!!!

Suppose that after paying for 9 laps, the 10th lap is free. Will the sequence still be arithmetic? Explain.
letter b only! thank you :)

Answer 1

No.

Explanation:

The numbers aren't going up at a constant rate. Say each lap costs 2 dollars. On lap 4, you have paid 8 dollars total. On lap 9, you have paid 18 dollars total. But the 10th lap is free, which means you pay 0 dollars. In order for this pattern to be constant, you would need to pay 20 dollars, but instead you pay 0.