I need help with these engineering economy homework problems. Use Microsoft Excel to solve these following problems with the following column headers.

Disc Rate Growth Factor Disc Factor Annual Worth Present Value of Annual Worth Year Revenue Cost Net NPV Dusty is designing a new bluetooth speaker. He is deciding whether to include a Snapp circuit, which speeds up pairing and connection to bluetooth devices. Snapp will increase the manufacturing cost, but hopefully the speaker will sell better and earn more revenue. Dusty's employer has a discount rate of 24%. Without Snapp (in millions of dollars) Cost Year Revenue 0 0 0 1 8 3 4 2 3 12 9 2 With Snapp Year Revenue Cost 0 1 9 WNO 12 18 7 9 3 Question 1 1 pts What is the Net Present Value of the "Without Snapp" design? 0 $12.9 million $14.1 million O $11.7 million $19 million Question 2 1 pts What is the Annual Worth of the "Without Snapp" design? $5.92 million $6.52 million $4.33 million $3.95 million Question 3 1 pts What is the Annual Worth of the "With Snapp" design? $3.95 million $4.33 million $5.92 million $6.52 million