Convert 25 miles into kilometres

In which form is the following function written? y = - 2(x – 3)(x + 5)

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

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.