$[$QX$]$: $10-10$ Elizabeth Bailey is the owner and general manager of Princess Brides, which provides

a wedding planning service in southwestern Louisiana. She uses radio advertising to market her

business. Two types of ads are available$-$those during prime$-$time hours and those at other times.

Each prime$-$time ad costs $$390$ and reaches $8,200$ people, while the off$-$peak ads each cost $$240$

and reach $5,100$ people. Bailey has budgeted $$1,800$ per week for advertising. Based on

comments from her customers, Bailey wants to have at least two prime$-$time ads and no more than six

off$-$peak ads.

a$.$ Formulate this as a linear program.

b$.$ Find a good or optimal integer solution for part $($a$)$ by rounding off or making an educated

guess at the answer.

c$.$ Solve this as an integer programming problem using a computer.

Please help how to solve it in excel with solver, with the step how to do it$.$ Thank you.