(Modify)a. Modify Program to determine the frequency returned by a car traveling at 55 mph...

(Modify)

a. Modify Program to determine the frequency returned by a car traveling at 55 mph. Your program should produce the following display (replacing the underlines with the values your program calculates):

The returned frequency corresponding to 55 mph is _____

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b. Compile and run the program written for Exercise a. Make sure to do a hand calculation so that you can verify the results your program produces.

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c. After verifying the results of the program written in Exercise a, modify the program to calculate the returned frequency of a car traveling at 75 mph.

Program:

#include using namespace std;int main(){double speed, fe, fr;fe = 2e10;fr = 2.0000004e10;speed = 6.685e8 * (fr - fe) / (fr + fe);cout << “The speed is ” << speed << “ miles/hour ” << endl;return 0;}