I'm not sure what the formulas are that should be for these questions.

In cell H4, create a formula using the IF function that tests whether the value in the Bundled column ([@[Bundled?]]) is "Yes".

b. If the value in the Bundled column is Yes, subtract 15 from the amount in the Per Month column ([@[Per Month]]).

c. Otherwise, the payment is the same as the value in the Per Month column.