Plan two: 17.99+(0.35x). X equals charge per minute at night and weekends.
We can subtract our main payment plans that don’t include variables, 23.99-17.99=6. We can then divide by our constant... 6/0.35 to get 17.14... minutes. so we can round up to 18 mins.
To make sure we are correct we can do,
17.99+(0.35)(18) to get 24.29 which is greater than 23.99.
You should expect to see more days with snow when the average temperature is lower, and less days wth snow when the average winter temperature is higher.