Write 3.5 x10^-7 in standard form

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

John has 1/2 pound of oranges to share with julie. if they share the oranges equally, how much will each of them have?

Write the equations in logarithmic form 7^3=343