A new snowmobile costs $4200. The value of the snowmobile decreases by 10% each year. Estimate after how many years the snowmobile will be worth $2500.
I am supposed to use logs in this but I am really confused so any help you can give will be much appreciated ;)
Also If it helps me the most I give brainiest
Thanks!!!

The function models the number of accidents

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?