Need help ASAP please

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?

What is the perimeter of an isosceles triangle with each leg measuring 2x+3 and the base measuring 6x-2?