On a piano, each key has a frequency, and each subsequent key (black or white) is a known amount higher. ex: the a key above middle c key has a frequency of 440 hz. each subsequent key (black or white) has a frequency of 440 * rn, where n is the number of keys from that a key, and r is 2(1/12). given an initial frequency, output that frequency and the next 3 higher key frequencies. if the input is 440, the output is: 440 493.883 523.251 554.365.
note: include one statement to compute r = 2(1/12) using the pow function, then use r in the formula fn = f0 * rn. (you'll have three statements using that formula, different only in the value for n).
(note 4/17/17: a student noticed that our example and test cases are skipping n=1, starting instead with n=2. we won't change the lab right now, so just assume you've been asked for steps n=2, 3, and 4.)

Anew author is in the process of negotiating a contract for a new romance novel. the publisher is offering three options. in the first option, the author is paid $5,000 upon delivery of the final manuscript and $20,000 when the novel is published. in the second option, the author is paid 12.5% of the net price of the novel for each copy of the novel sold. in the third option, the author is paid 10% of the net price for the first 4,000 copies sold, and 14% of the net price for the copies sold over 4,000. the author has some idea about the number of copies that will be sold and would like to have an estimate of the royal- ties generated under each option. write a program that prompts the author to enter the net price of each copy of the novel and the estimated number of copies that will be sold. the program then outputs he royalties under each option and the best option the author could choose. (use appropriate named constants to store the special values such as royalty rates and fixed royalties.