Kelly bought a used car for $20,000 and the dealer told her that it will lose 9% of its value each year after its purchase.

if values continue at that rate, calculate how long it will take until the car is worth only $7,000.

round your answer to the nearest tenth.

Pls brainliest will be awarded if answer is correct

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart