Suppose the population of a certain city is 3920 thousand it is expected to decrease to 3053 thousand in 50 years find the percent decrease round to the nearest tenth

Pls brainliest will be awarded if answer is correct

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.