evaluate the description of the position of an object. suggest ways to improve each description a store is three blocks from my car be in my car my house is 200 miles north of the freeway see the grocery is 100 miles west of here

Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.